Let's discuss evolution and instinct

[nautica]

A couple of months ago someone left a kitten on the side of the road (it could not have been more than a week old, if that). Me being the push over that I am (even though I am not a cat lover) brought it home. On the way home I stopped by the pet store and got a litter box and the crap you put in it. I sat the litter box in the laundry room and filled it up while holding the cat. Went in the living room and the kids played with it for 30 minutes or so and fed it. After that the kitten ran into the laundry room, hopped into the litter box, pooped, covered it up, hopped out and ran back into the living room. Every since that time he has used the litter box. If we are outside playing with him, he will run inside to go to this litter box and use it.

We will all agree that this must be due to instinct. Not taught by me or his parents. The question is how can this instinct have evolved? How can this be passed down genetically. In my wildest imagination, I can see one of his parents or grandparents being taught and some how this being passed down. This has Lamarkian evolution written all over it. This trait must have been acquired and past down?

I know, I probably sound like an idiot here, but I thought I understood instinct in relation to evolution until I saw this.

Anybody have any thoughts, explanatin, and/or other examples? Surely, there is a simple rational explanation for this other than the passing of acquired characteristics, but what? There is no evolutionary advantage to this, although since man is the selector the cats, which do this would be selected. But, I just can not comprehend how this animal, which has never been around my laundry room, this litter box (or any other litter box), has probably never even been in a house before could instinctively do this. Like, I stated earlier, this cat was less than a week old, obviously had been left there for a couple of days (some neighbors had said they saw the cats there earlier) and I have heard of other cats doing this. So, what's is it?

Thanks
Nautica

 

[matthyaouw]

The simplest (and most boring) explanation that comes to mind is that in its first few days of life, it had seen its mother displaying the same behaviour and merely copied it.

 

[hitssquad]

Loose-soil-pooping-and-flinging instincts

the kitten ran into the laundry room, hopped into the litter box, pooped, covered it up... I thought I understood instinct in relation to evolution until I saw this.

Cat's seem to have an instinct to poop in loose soil and/or to fling loose soil between their legs after pooping. You might notice that sometimes a cat will miss when covering it up, and that when it does this it walks away afterward seemingly-satisfied just the same as if it had not missed. This might seem to imply that the covering-up motion (the flinging back of loose soil with the front paws - which is apparently very endorphin-releasing if you are a typical cat and you have just pooped) is what is instictive and whether or not the cat actually succeeds in doing it is peripheral to the reward mechanism of the instinct.

If flinging loose soil between your legs directly after pooping released endorphins into your brain, do you not think you would go out of your way to do it every time you pooped, Nautica?

 

[nautica]

The simplest (and most boring) explanation that comes to mind is that in its first few days of life, it had seen its mother displaying the same behaviour and merely copied it.

Yes, that is definitely simple - but like I said, I doubt this cat ever saw its mother run anywhere, much less inside a laundry room of my house.

Nautica

 

[nautica]

Cat's seem to have an instinct to poop in loose soil and/or to fling loose soil between their legs after pooping. You might notice that sometimes a cat will miss when covering it up, and that when it does this it walks away afterward seemingly-satisfied just the same as if it had not missed. This might seem to imply that the covering-up motion (the flinging back of loose soil with the front paws - which is apparently very endorphin-releasing if you are a typical cat and you have just pooped) is what is instictive and whether or not the cat actually succeeds in doing it is peripheral to the reward mechanism of the instinct.

If flinging loose soil between your legs directly after pooping released endorphins into your brain, do you not think you would go out of your way to do it every time you pooped, Nautica?

Yes, I understand this. I can realize that it is due to instinct, that is not difficult to see. But, I am looking for an evolutionary advantage. Could it be so simple that humans simply didn't breed those cats that did not poop appropriately. Would a tiger or lion kitten show similar behavior? Would a female tiger not breed with a male tiger unless he displayed proper toilet etiquette?

I guess man has selected on domesticated cat breeds for so long that any discussion of evolution is worthless when comparing to selection on the wild types by nature.

Nautica

 

[NeutronStar]

But, I am looking for an evolutionary advantage.

A instinct doesn't necessarily have to be an advantage to survive the process of evolution. As long as it isn't a disadvantage there's really nothing preventing it from evolving.

Although in the case of domestic cats there probably has been an great advantage for cats that have good "toilet etiquette". Cats have been domesticated for quite some time. Long enough to be shaped by selective breeding for sure. And selective breeding can accelerate the evolution of specific traits.

Dogs don't naturally use litter boxes. So there is a fundamental difference there. Perhaps in the wild dogs ran around in packs bedding down at a different place every night. No need to worry about a poopie "house".

Cat's on the other hand may have had specific dens where they bedded down quite often so they evolved to pay more attention to their poopie behavior so as not to dirty the den?

That's entirely a guess because I never really studied the behavior of wild cats or dogs, but it is a suggestion of how these things could have evolved. The cats didn't necessarily have an advantage by bedding down in the same place often (or maybe they did). But my point is that some instinctual behaviors may not have had a clear-cut evolutionary advantages it might have just been something the animals did for perhaps some type of social reasons or whatever. That behavior would still become instinctual in the species.

I have two cats, and if they stopped pooping in the kitty potty and started pooping all over my house they would quickly become two Schrödinger cats (i.e. their probability of survival would become controversial). So it's definitely a survival advantage at my house.

 

[nautica]

"Cat's on the other hand may have had specific dens where they bedded down quite often so they evolved to pay more attention to their poopie behavior so as not to dirty the den? "

This is a good point, one which I did not think of. So, possibly this instinct had already evolved to a point and man accelerated it.

Instinct still amazes me. How it generally evolved is not that hard to grasp, but once again, the fact that this cat took the initial step, at such a very young age to run to the laundry for this specific purpose and "act like a cat" is.

I am trying to paint a picture in my mind of a specific nucleotide sequence working alone or in conjunction with other sequences, which provides information, which hard wires the connections in the brain, which in turn directed this cat to do the same thing that its predassesors have done for 1000's of years. And, also, the fact that this appears to be tied to the inheritance of an acquired trait, which I believe almost everybody after Lamarck and Darwin has dismissed.


I am not only amazed, but I guess I am searching for an answer which will not be answered within the near future, at least not directly.

Nautica

 

[NeutronStar]

I am trying to paint a picture in my mind of a specific nucleotide sequence working alone or in conjunction with other sequences, which provides information, which hard wires the connections in the brain, which in turn directed this cat to do the same thing that its predecessors have done for 1000's of years. And, also, the fact that this appears to be tied to the inheritance of an acquired trait, which I believe almost everybody after Lamarck and Darwin has dismissed.

I'm not a biologist. Although to be fair, I should mention that I took just about every major undergraduate biology course available, including genetics and cell biology. Both of which I found fascinating.

I'm a rebel radical who refuses to believe anything merely because it's "traditionally accepted". None the less, I do believe that evolution was the mechanism that created everything we see around us. Not just the biological things, but the principle of non-genetic evolution also occurs in non-biological things. Such as the evolution of the geology of the earth, and in particular the composition of its atmosphere and oceans, etc. Of course I didn't stop there. I actually majored in physics (in a more 'real' sense) and I have studied the evolution of our solar system, our galaxy, and even our universe (at least to the extent where current theories suggest).

In any case, I stand in awe at the biological evolution of instincts just as you do. There are however some things that help me to understand it better that aren't often taught in standard courses on biology. I'll list some of those concepts here,….

1. A trait does not need to be an advantage to evolve (as long as it's not a disadvantage it can still evolve)

The important thing to take from this is that traits or instincts don't need to have any obviously "reason" or "purpose". Evolution operates by chance, and by chance, any trait can be carried on through the process if it's not a disadvantage.

2. The time scales involve in evolution are quite literally incomprehensible. I mean, we can talk about numbers, but humans only live for less than 100 years typically. So to even speak in terms of a mere thousand years is totally removed from any human's experience. To talk about tens of thousands, or hundreds of thousands, or even millions of years is really totally outside the scope of human comprehension. We can toss the numbers around, but we have no direct experience of what they mean. So to truly understand just how much time these processes had to work is really not possible.

3. The whole is greater than the sum of its parts

This one is probably the least understood in biology. Biologists are always looking for a gene that's responsible for this, or a gene that's responsible for that. But many of the large-scale traits of a living breathing creature may actually not be the work of anyone gene, or even a handful of genes. It may just be the result of the completed biological machine. Heck, even man-made machines have individual personalities, if you will, that were not designed into them specifically. These individual personalities are a result of how all of the individual components work together to combine the whole. Biological machines being infinitely more complex than man-made machines would display this phenomenon infinitely more profoundly. (note: the word infinitely here is meant to imply a huge increase in ideas, and does not necessarily adhere to any formal mathematical definition of infinity.)

Here's a topic in evolution that has always left me stumped,…

There exists a spider (I think it's native to Australia, but not sure about that), that builds a net instead of a web. It hangs from plants waiting for some prey to come along and then pounces on the prey wrapping it up in the sticky net. This behavior is so totally outside of the scope of what most spiders do. Yet it is an instinctual behavior for this species of spider. Why did some spiders evolve to build webs to wait for prey to get caught in them, yet this other spider decided to build a net to catch its prey by hand? And how could such an elaborate behavior have "evolved". Who was the first spider to do this? And how did the urge to do this get passed down in genes?

This net-casting almost seems like a conscious engineering feat. Yet, if we think about it, even the web-building technology of more common spiders seems more like engineering than instinct. All the different species of spiders build different types of webs. It seems that the blueprint for the web is passed down genetically too. But is there actually a gene for web building? Or do spiders that are built a certain way just automatically have an urge to build webs (simply because the whole is greater than the sum of the parts?).

I have no clue. And I honestly don't believe that biologists do either actually.

http://faunanet.gov.au/wos/factfile.cfm?Fact_ID=88
(It's kind of like the litter box thing,… Why do they do something like this that they've never been taught to do):

 

[nautica]

Interesting link. Thanks. So what about the the inheritance of acquired traits. All biologist "know" that this is not possible. But, when we speak of instincts it seems like common sense says that it is possible. Even though, we could come up with no mechanism to show its existence.

We know that germ lines are set before we have life experiences to change these. We pass genes, which have supposidly been unaffected by the life of the person who passes them (unless of course radiation or something has specifically affected the sperm or egg cells or organs which produce them). But, what if it is possible? What if the life experience of say this cat or spider, which you mentioned, somehow mutates the germ line.

I know it is far fetched and I know for over 50 years 1000's of scientist have studied this and concluded that this is not possible. But, I have alway bought into the notion that if there is several different explanations for a phenomemon that the simpliest is usually correct and it just seems simple to me that this "acquired trait" has been passed.

Nautica

 

[NeutronStar]

But, I have alway bought into the notion that if there is several different explanations for a phenomemon that the simpliest is usually correct and it just seems simple to me that this "acquired trait" has been passed.

I'm inclined to agree with you to some extent.

I personally believe that there is something more than just genetic biology going on here, but since I have no scientific evidence for that I'll refrain from going into that speculation. (or at least wait until the end of the post to mention it)

First, I would like to speak to the issue of "acquired traits".

Just when did the net-casting spider, for example, acquire the ability to create and cast a net? I asked in my previous post, "Who was that first net-casting spider?". Well, the answer is most likely that there was no individual spider responsible for this stroke of engineering genius.

Instead what most-likely happened is something along the following lines. Let's assume that some species of spider failed to inherit the web-building instinct. So that species of spider, and its offspring, was actually at a disadvantage. This probably resulted in a lot of spiders that didn’t live very long thus they didn't pass on their deficient genes. However, some of those spiders may have had an instinct to use its sticky silk to help capture its food. The spiders that inherited that instinct tended to live a bit longer and thus propagate the genes that carried this instinct. So most of its offspring would inherit this instinct or urge. Over time, (lots and lots of time), the offspring that had the greatest ability to use sticky silk to capture its prey survived the longest, thus giving rise to offspring that carried this same instinct.

Over many millennium only the spiders that were the most efficient at this technique survived thus weeding out the ones that didn't inherit this instinct. In other words, there were probably a lot of really crude net-casting spiders in the past that didn't live very long.

But the main point is this,… Just where in this chain of events was the trait "acquired"?

There wasn't any particular individual that was born without this instinct and then acquired it after birth thus passing it on to its descendents. In fact, in my make-believe scenario, this actually could have come about due to spiders that, for whatever reason, didn't inherit the more common web-building instinct. So this new ability was kind of acquired over time via the process of natural selection. Spiders that had a strong instinct to use their silk to catch prey survived to pass on that instinct. The spiders that had the best ability to do this passed on their genes, and the best one of that litter passed on their genes, and so on. Given that spiders often have literally hundreds of offspring, and given that this could have taken millennium there could have been a whole lot of failed spiders to achieve the efficient ones that we see today.

Of course, getting back to your kitty litter question. There really doesn't seem to be any good reason why cats with poor poopie habits wouldn't have survived. Unless they were socially rejected from other groups of cats thus leaving them to fend for themselves with lesser chances to mate. I dunno.

An unscientific aside,...

Just for the record, I believe that there is something more to the whole mystery of life. I believe in reincarnation to some degree. That would explain how instincts are propagated (i.e. they are carried in the consciousness of the underlying spirits)

Of course, I'm not sure how reincarnation would work. It would seem to me that spiders would need to be reincarnated into more spiders, and cats into cats, and humans into humans, etc. At least at some level. Maybe we all move up through a chain of reincarnations that start out as simple living organisms (maybe even plants!). Then after spending so much time being reincarnated in one life-form we move on to a higher species. There's no scientific evidence for any of that, but it would explain a lot about how instincts are propagated

 

[Ethereal]

On a completely unrelated note, is it true that cats always land on their feet when they get thrown out the window?

 

[nautica]

On a completely unrelated note, is it true that cats always land on their feet when they get thrown out the window?

Yes, I agree. This is a completely unrelated note.

But, I figure since Neutron brought reincarnation into to the thread it will come to an abrubt halt anyway.

Nautica

 

[DocToxyn]

Nautica, NeutronStar, interesting thread you have going here. I'll put in my thoughts. As far as burying behavior, I always considered it part of the predator/prey relationship. The predator may avoid detection by burying or masking its scent/presence in the area and thus achieve a better kills/attempt ratio than one that does not "use the litter box". This may be especially apparent in cats since I would think they have smaller home ranges than say dog packs that must hunt over more ground by necessity to feed the pack (someone please correct me if I'm wrong and lions may be the feline exception being group hunters, do they bury feces?). The trait may have simply carried over into domestic life like so many other predator traits, although as you say contemporary humans would surely "select" for this characteristic. Which brings me to an agreement with NeutronStar's approach to advantage vs disadvantage, if the trait isn't actively selected against then it could be passed on, even with no obvious benefit. Whether that is the case here remains to be proven.

The spider scenario is also very interesting. Web building strategy is extremely variable across species, from those that don't use webs at all to capture prey to those that build elaborate orbs or huge multi-spider colonies. As far as molecular forces driving such behavior I would submit an example I read about some years ago in Nature:
Eberhard, W. G. 2000. Spider manipulation by a wasp larva. Nature Vol. 406. 20 July: 255 - 256. (having problems with hyperlink, sorry)
The article summarizes the relationship between a spider host and a parasitic ichneumonid wasp. The short story is that the parasite influences the host spider to dramatically alter its web design just prior to killing the host so as to create a web more suitable for the larvae to pupate in. This alteration of the spiders behavior is believed to be initiated by chemicals released by the larvae and speaks to "fine behavioral details [that] are independent units"
and controllable by external influence. Whether this can be taken down to a specific proteomic/genomic substrate...?
Further points on web spinning come from:
Venner et al. Web-building behavior in the orb-weaving spider Zygiella x-notata: influence of experience. Anim. Behav. 2000 58(3): 603-11,
which addresses the impact of information gained from prey capture on web building and how spiders "learn from experience".

I'm not sure if any of my points get to the bigger issues of 'inheritance of acquired characteristics" but hopefully they shed a little light (dim or otherwise) on the seemingly limitless potential for organisms to adapt and evolve.

 

[NeutronStar]

Eberhard, W. G. 2000. Spider manipulation by a wasp larva. Nature Vol. 406. 20 July: 255 - 256. (having problems with hyperlink, sorry)

http://www.museums.org.za/bio/spiderweb/manip_wasp.htm"

Very interesting.

 

[NeutronStar]

More unscientific mumbo-jumbo

But, I figure since Neutron brought reincarnation into to the thread it will come to an abrubt halt anyway.

Nautica

Unfortunately the idea of reincarnation automatically conjures up ideas of mystical intervention for most people.

However, it doesn't necessarily need to imply that. It could be that our universe maintains a separate dimension of consciousness that has evolutionary properties just like everything else. (i.e. this could be imagined to exist without invoking a higher power or controlling deity) In other words, it could be seen as just another dimension of the universe.

I admit that this is an unscientific idea in the sense that it can't be directly proven. However, in light of the so-called science of String Theory where they talk about 11 hidden dimensions and multiple external universes in the form of branes. Well, wtf? If they can call that science it seems to me that one little assumption of an added dimension of consciousness deserves a little place in science as well.

However, since most people would automatically associate the idea of reincarnation with theological ideas I suppose I should have never brought it up.

Anyhow, I hope I didn't ruin your thread with that little tid-bit of an idea.

 

[nautica]

Anyhow, I hope I didn't ruin your thread with that little tid-bit of an idea.

I am running out the door and just logged in. I didn't have time to read the last couple of post, but I did notice this statement. And, no you did not ruin my thread. I am looking for all ideas from everybody. Be it scientific or not. I am not saying that I agree or disagree, but I am interested in everyones opinion.

Nautica

 

[Rebecca Moise]

This is an old discussion so I'm not sure anyone is reading any more. But the topic interests me. The kitten covering urine and fecal matter is a variant of a powerful and very adaptive instinct, aversion to such substances which carry disease and perhaps other undesirable substances. Long before kittens ancestral animals which avoided contact with wastes the body had eliminated lived longer, were healthier and thus were more likely to reproduce. The animal registers aversion/disgust through smell that becomes offensive. Once a behavior pattern enters the genetic structure it can and usually does acquire other uses. There is more aversion to contact with other's potentially disease carrying waste matter than one's own, so an animal can use these to mark its territory. Other animals will notice the offensive smell. The pattern may become attached to behaviors associated with dominance and submission. The more dominant animal is in a position to register its aversion to the submissive animal's waste, the submissive animal's survival and well being depends on being more careful to avid giving offense. A tiny kitten knows, by instinct, it must cover its fecal matter. Domestic cats are living with beings stronger than itself, although some adult cats may push the matter by being less careful, or perhaps even deliberately offensive, about where they defecate. Cats being solitary hunters are, by instinct, more careful about cleanliness generally, probably those who in the past carries less odor were better able to sneak up on prey and thus healthier and better able to reproduce.

 

[JorgeLobo]

This is a lot of speculation - like to see the basis.

Let's review the assumptions. On what data doe we see health and reproduction favored among those that avoid contact with wastes?
Just how does a behavior pattern "enter the genetic structure"? Mind giving us an example? and hoe does such a pattern become "attached" to a behavior? Why are "solitary hunters" instinctively (genetically?) more careful about "cleanliness (whatever that means in this context)?
I'll be especially interested in understand how that translates to sneaking up on prey - as if the prey only smelled feces.

 

[Rebecca Moise]

JorgeLobo, You raise a number of questions. What data suggest health and reproduction are increased when animals avoid contact with wastes? It is well known that wastes carry disease. David McCulloch in his book 1776 discusses the huge number of deaths from disease of Washington's soldiers, who did not regularly established latrines (digging ditches to bury waste) and many fewer diseases among more disciplined British soldiers who did establish latrines. To take another example, disease took more of a toll in the middle ages among Christians whose management of body wastes was lax, to say the least, than among Jews who more adhered to standards of cleanliness. There is a reason that fecal matter smells bad not just to us, but animals generally act as if there were some such aversion.

How does a behavior pattern "enter the genetic structure"? This sounds like the discredited theories of Lamarck, the question originally posed about the kitten only a few days old using the litter box. This is not, however, Lamarck. Just for the sake of argument, suppose that cats not defecating in places offensive to more powerful beings was just a matter of cats doing what is pleasing to humans. (I don't think it is just this, but suppose it were.) I believe cats have been living with humans for about 10,000 years. Over these many years, those who defecated people's beds or tables would probably be more often drowned, or at least evicted from the house and not fed, than those who refrained from such behavior. Genes promoting restraint would be more likely to be passed on to future generations, a genetic structure lacking this restraint would more likely be extinguished. Not Lamarck here but pure Darwinean survival of the fittest. Richard Dawkins in his many works (especially, maybe, The Blind Watchmaker) has written about this most eloquently, but others have as well.

How does such a pattern become "attached" to a behavior? A pattern, once established, acquires other uses. Thus with patterns governing physical structures. Feathers apparently first evolved in beings that did not fly. Maybe they helped conserve heat? Once feathers existed, they proved very adaptive to beings that started gliding and then flying, so that animals with those particular patterns of genes proved superior in competition with most other gliding or flying animals. This is an example of a physical structure acquiring other uses. You're right, probably, to point out my sloppy language, but one might say (sloppily) that the genetic pattern (feathers) becomes associated with a new behavior (gliding or flying). Genetic patterns that are behavioral can acquire other uses. Among mammals, the mother animal obviously provides some care, nurturing and protection to offspring. Among some mammals, then, adults may provide care, nurturing and protection to one another, not just offspring. Once the pattern exists it can be used for other things.

Why are solitary hunters more careful about cleanliness? Those that depend on stealth, such as cats, will be more successful if prey do not detect their presence until it is too late. Cats can walk very quietly. They move slowly and duck down or otherwise hide when they are sneaking up on prey. They will be more successful hunters (thus live longer and reproduce more) if prey are less likely to detect their presence by smell. Prey do not smell only feces, but feces do have a particularly strong odor, so it would be adaptive for cats to be especially careful about feces. Cats are not only careful about feces but also spend considerable time and energy licking themselves which helps keep their fur clean.

Thanks for the interesting questions.

 

[stochastic]

In the wild, only secondary cats bury their waste to protect their trail from predators. The dominant feline will actually display his or her feces prominently. This sends a strong message of dominance. In the world of house cats, you are the dominant animal and the house cat chooses not to offend you. They will carefully bury their feces to eliminate interfering with what they perceive as the natural order.

that was from: http://www.sniksnak.com/cathealth/whydo.html

i got that from a topic on yahoo where someone was asking why their kitten would not cover up after.

i think this means we have to keep neutronstars point on looking at something as a whole in mind. clearly there is personality involved in this, otherwise there would be no dominance and then the question is, would they all cover their waste or would they all not cover it? but their is personality and so that means (if we think of it like a computer program) the instinct is: IF i am the alpha THEN i do not cover my waste; IF i am the beta THEN i do cover my waste.

but... if the definition of instinct is:
a largely inheritable and unalterable tendency of an organism to make a complex and specific response to environmental stimuli without involving reason b: behavior that is mediated by reactions below the conscious level.

how can this be an instinct if they have the a psychological choice to not do it? it seems more like cats have inherited knowledge available to their conscious mind. or perhaps they evolve as individuals much more quickly than we comprehend in association with ourselves. they live much shorter lives, so perhaps the 'fog of infancy' wears off in a matter of days or even hours and their mother communicates this behavior to them. there are many forms of communication, who says it has to be a visual demonstration.

 

[JorgeLobo]

Thanks for the response but this is just more speculation, little better than before - but thanks for clarifying some of your thinking. I'm a scientist and would like to see data - none here. As a microbiologist , I'm quite well aware that failure to control wastes may lead to disease. Your contention was that animals genetically "understand" and address that need. What data support this? And what data support your alleged "restraint" genes?

Fecal matter smelling "bad" is subjective as is cleanliness in context of cats licking themselves . Anthopomorphizing the effort doesn't explain it - it merely communicates the bias of the observer. In any case, cats will have odors detectable by their prey whether fecal or not and these they must address in their hunting.

 

[Rebecca Moise]

OK JorgeLobo. I see a bit more what you are getting at. Links among waste, disease, life expectancy and reproduction don't need to be explained. Questions, however, might include: does the potential for waste and disease to shorten life expectancy and reproduction shape behaviors of nonhuman animals in the absence (probably) of anything we humans would recognize as conscious "understanding" of these links? If there are behaviors that look as if the animal had that "understanding," where would such behaviors come from? Instinct? What, then, is an instinct?

Now, however, I'm back in a situation described by one of my teachers, Peter Levine, of having thought about something for such a long period of time, I have trouble knowing what might be obvious to someone else, and needing no explanation, and what is totally strange to someone else, and, of course, possibly wrong (since science needs some external validation other than it seems so to me). That is one reason I'm interested in pursuing the discussion.

One can cite examples of animals registering behaviors we would associated with disgust at, displeasure with or avoidance of urine and feces. If the litter box of a domestic cat, for example, is not cleaned regularly, it may refuse to use it and find other places to defecate (risking the rage of the dominant members of the household). I remember reading that among some animals, wolves maybe, dominant members have been seen attacking and killing a subordinate member of the pack which defecated in a place they did not like. One of our cats once ran around the house registering some kind of extreme cat distress (which may or may not resemble human distress--I don't mean I can read the cat's mind, only that it looks on the outside like what we would feel as distress) when a piece of fecal mater did not drop into the litter box but stuck to her fur. Jane Goodall described a male chimpanzee turning away registering what looked like disgust and refusing to copulate with a female chimp which had failed to clean herself and had fecal matter on her bottom. The female was in estrus, but it would seem the distaste for fecal matter was the overriding "instinct" in this case. Are example like these what you had in mind when you asked for "evidence"?

It seems highly unlikely that the disgust/avoidance behaviors just described are unrelated to waste carrying the potential for disease. The relationship, however, is not in the mind of the animal. The relationship is in Darwinian natural selection. Over thousands and millions of years, animals which avoid unnecessary contact with their own waste matter, and especially with waste matter of other members of the same species, tend to be healthier, live longer and be more likely to reproduce, than animals which lack this behavioral safeguard. I think this is more than speculation, although not, perhaps an observable fact. It is simply very reasonable. Could it be only coincidence that animals in many situations display this behavior and that it also helps protect the animal from disease?

Instinct might look like knowledge or understanding, but it's not. Often it might manifest as a build up and discharge of energy, a feeling of urgency or pleasure at acting a certain way, aversion or displeasure at acting a different way. It might simply manifest as an impulse. Migratory birds might look as if they are flying south to get to someplace warmer. However, when some species were relocated to the southern hemisphere, they flew south as the season changed and died, as they were then flying into the cold. The impulse was to move a certain direction, not to avoid cold. The reason for the behavior was not in the mind of the animal. The reason was in Darwinian natural selection operating in a particular environment. The behavior might become totally nonsensical in a different environment.

 

[baywax]

Yes, that is definitely simple - but like I said, I doubt this cat ever saw its mother run anywhere, much less inside a laundry room of my house.

Nautica

But the kitten was with you when you shuffled the kittylitter around in the box. Imprinting is very strong at such a young age. First you rescued the kitten... you imprinted on it as the mother figure... instinct determines that the kitten must learn from you. Second, you make a big impression about the loose soil being a place for the kitten and for your "paws" to move the dirt around... instinct takes care of the rest of the equation.

 

[BoomBoom]

In the wild, only secondary cats bury their waste to protect their trail from predators.

This sounds like a logical and plausible explanation.

how can this be an instinct if they have the a psychological choice to not do it?

If that is truly the case (that dominant cats display their feces while passive cats bury them), then it could be that whatever genetic triggers are responsible for this behavior are turned off when a cat assumes the psychology of the role of dominance. Pure speculation, I know, but there are many intricate factors that play into how genes express themselves and I see no reason why instinctive behavioral patterns should be any different.

 

[JorgeLobo]

Thanks Boomboom for observing the complexity of the phenomena and the speculative nature of your comment.

Rebecca - volume does not make up for excessive and unfounded speculation. Please remember this is a science forum

 

[chemisttree]

OK JorgeLobo. I see a bit more what you are getting at. Links among waste, disease, life expectancy and reproduction don't need to be explained. Questions, however, might include: does the potential for waste and disease to shorten life expectancy and reproduction shape behaviors of nonhuman animals in the absence (probably) of anything we humans would recognize as conscious "understanding" of these links? If there are behaviors that look as if the animal had that "understanding," where would such behaviors come from? Instinct?

All of my cats clean themselves 'down there'. I think the contact with feces explanation for this behavior is likely an anthropomorphism rather than an explanation for an evolutionary pressure. I like the explanation given by Stochastic but I don't know if it has been tested or verified any more than some theory that cats decended from a line of organic gardeners who make their own compost (y'know, for survival reasons since better farmers fare better during times of famine...)

And... I don't think shortened life expectancy is a valid evolutionary pressure. Who cares if a cat lives 6 years or 10? It reaches reproductive age in both cases.

 

[Rebecca Moise]

All of my cats clean themselves 'down there'. I think the contact with feces explanation for this behavior is likely an anthropomorphism rather than an explanation for an evolutionary pressure. I like the explanation given by Stochastic but I don't know if it has been tested or verified any more than some theory that cats decended from a line of organic gardeners who make their own compost (y'know, for survival reasons since better farmers fare better during times of famine...)

And... I don't think shortened life expectancy is a valid evolutionary pressure. Who cares if a cat lives 6 years or 10? It reaches reproductive age in both cases.

A cat that lives 10 years might produce more kittens than one that lives 6 years.

 

[Rebecca Moise]

In the wild, only secondary cats bury their waste to protect their trail from predators. The dominant feline will actually display his or her feces prominently. This sends a strong message of dominance. In the world of house cats, you are the dominant animal and the house cat chooses not to offend you. They will carefully bury their feces to eliminate interfering with what they perceive as the natural order.

that was from: http://www.sniksnak.com/cathealth/whydo.html

i got that from a topic on yahoo where someone was asking why their kitten would not cover up after.

i think this means we have to keep neutronstars point on looking at something as a whole in mind. clearly there is personality involved in this, otherwise there would be no dominance and then the question is, would they all cover their waste or would they all not cover it? but their is personality and so that means (if we think of it like a computer program) the instinct is: IF i am the alpha THEN i do not cover my waste; IF i am the beta THEN i do cover my waste.

but... if the definition of instinct is:
a largely inheritable and unalterable tendency of an organism to make a complex and specific response to environmental stimuli without involving reason b: behavior that is mediated by reactions below the conscious level.

how can this be an instinct if they have the a psychological choice to not do it? it seems more like cats have inherited knowledge available to their conscious mind. or perhaps they evolve as individuals much more quickly than we comprehend in association with ourselves. they live much shorter lives, so perhaps the 'fog of infancy' wears off in a matter of days or even hours and their mother communicates this behavior to them. there are many forms of communication, who says it has to be a visual demonstration.

There are times when one set of instincts might be altered, or suppressed altogether, by a different set of instincts. This might not involve "psychological choice" or the ambiguity between two sets of conflicting instincts might make room for some degree of psychological choice.

 

[JorgeLobo]

M ore BS - where's the data supporting this latest round of speculation?

 

[stochastic]

jorge, how about you bring something more to the discussion other than being the speculation police. no one here has any data for you. this might be a science forum but that doesn't mean every comment has to have a reference and data behind it. we arent writing a book we are having an interesting talk about something which, to my knowledge is not well researched. how about you provide us with some data, or let us talk.

 

[baywax]

Behavioural Development in the Cat

Imprinting

Chesler ('Maternal influence in learning by observation in kittens,' in Science vol. 166 pp. 901-3, 1969) found that kittens which were allowed to watch their mother perform an operant response (pressing a lever to obtain food) were able to acquire the response quickly, whereas kittens who were given the opportunity to acquire the response by trial-and-error never did so. Moreover, kittens who watched their own mother acquired the response sooner than kittens who observed a strange female, suggesting that social learning is facilitated if the 'model' cat is familiar to the observer.

The OP became the "mother cat" by rescuing a week old kitten. All of that role model's actions, including the shuffling of the kitty litter, were quickly learned... or "imprinted"... by the kitten from the surrogate mother and reproduced in kind.

http://www.fathom.com/course/21701782/session3.html

 

[Rebecca Moise]

Without your comment, Stochastic, I was thinking this discussion is producing little more than irritation. I'm too interested in the topic to be argumentative for the sake of being argumentative. I'm reminded of the flood of protest that greeted E.O. Wilson's "sociobiology," including some social scientists calling for the elimination of books on sociobiology from university libraries. Perhaps if this current exchange has interest for others, there is some point in continuing. After all, if people are unhappy talking about phenomena that are part-way invisible, why discuss evolution and instinct at all? Obviously we lack both time machines and the ability to read the minds of animals.

So to continue, I fail to see how my collection of odd observations of behavior (reactions to bodily waste) of some animals in some situations constitutes "speculation." They are, after all, direct observations, by others or myself. They constitute some kind of "evidence," admittedly not systematic.

About times when one set of instincts are altered or suppressed altogether by a different set of instincts or times when two sets of instincts conflict: As it happens, evidence of the way different instincts suppress or modify one another has long been documented, including by Nobel Prize winners Niko Tinbergen and Konrad Lorenz. Here from Lorenz's 1963 work later translated On Aggression, chapter 6, "The Great Parliament of Instincts."

"It is the simplest form of interaction between two conflicting drives when one simply suppresses or supplants the other."

"In reality, all imaginable interactions can take place between two impulses which are variable independently of each other."

"A simple example. . . is represented by the way in which a dog moves its facial muscles when torn between the drives of fight and flight. The resulting expression, which is generally called threatening, occurs only when the tendency to attack is inhibited by fear, even a small portion of fear."

Lorenz proceeds to document varying facial expressions of dogs illustrating different combinations of the two sets of instincts. At the same time he says these observations do not constitute scientific proof as he understands this, this latter requiring statistical evaluation and experimentation. Students undertaking more rigorous study, he suggests:

"are often disappointed that their painstaking analysis, above all the dull statistical evaluation, finally shows nothing beyond what a sensible person with eyes in his head and a good knowledge of animals knows already. There is, however, a difference between seeing and proving. . . . There is, in fact, a school of orthodox American behaviorists who seriously attempt to exclude direct observation of animals from their methods. It is a worthwhile task to prove what we have seen, in such a way that these and other 'eyeless' but intelligent people are bound to believe it."

So comments Lorenz, who goes on to present details of analyses by one Helga Fischer documenting more scientifically. that is limiting confounding independent variables and measuring more precisely, for Greylag Geese, different "forms of expression movements arising from the conflict between the drives of escape and aggression."

This is old stuff. Recent work by Steve Porges, Peter Levine and others have opened up new avenues of understanding based on detailed analysis of the so-called freeze response, as when an organism (such as a possum "playing dead") collapses in response to overwhelming danger. Instincts of fight or flight, which involve powerful energetic responses to danger, dramatically and involuntarily switch off. Evidence of this phenomenon includes videos of animals in the wild, observation, experimentation and direct measurement of physiological responses, revealing that under apparent calm, trance or death-like state, there is at the same time intense activation of the original fight/flight responses, now overridden but still present. This is not speculation but powerful evidence which I could elaborate if there were interest.

 

[baywax]

Without your comment, Stochastic, I was thinking this discussion is producing little more than irritation. I'm too interested in the topic to be argumentative for the sake of being argumentative. I'm reminded of the flood of protest that greeted E.O. Wilson's "sociobiology," including some social scientists calling for the elimination of books on sociobiology from university libraries. Perhaps if this current exchange has interest for others, there is some point in continuing. After all, if people are unhappy talking about phenomena that are part-way invisible, why discuss evolution and instinct at all? Obviously we lack both time machines and the ability to read the minds of animals.

So to continue, I fail to see how my collection of odd observations of behavior (reactions to bodily waste) of some animals in some situations constitutes "speculation." They are, after all, direct observations, by others or myself. They constitute some kind of "evidence," admittedly not systematic.

About times when one set of instincts are altered or suppressed altogether by a different set of instincts or times when two sets of instincts conflict: As it happens, evidence of the way different instincts suppress or modify one another has long been documented, including by Nobel Prize winners Niko Tinbergen and Konrad Lorenz. Here from Lorenz's 1963 work later translated On Aggression, chapter 6, "The Great Parliament of Instincts."

"It is the simplest form of interaction between two conflicting drives when one simply suppresses or supplants the other."

"In reality, all imaginable interactions can take place between two impulses which are variable independently of each other."

"A simple example. . . is represented by the way in which a dog moves its facial muscles when torn between the drives of fight and flight. The resulting expression, which is generally called threatening, occurs only when the tendency to attack is inhibited by fear, even a small portion of fear."

Lorenz proceeds to document varying facial expressions of dogs illustrating different combinations of the two sets of instincts. At the same time he says these observations do not constitute scientific proof as he understands this, this latter requiring statistical evaluation and experimentation. Students undertaking more rigorous study, he suggests:

"are often disappointed that their painstaking analysis, above all the dull statistical evaluation, finally shows nothing beyond what a sensible person with eyes in his head and a good knowledge of animals knows already. There is, however, a difference between seeing and proving. . . . There is, in fact, a school of orthodox American behaviorists who seriously attempt to exclude direct observation of animals from their methods. It is a worthwhile task to prove what we have seen, in such a way that these and other 'eyeless' but intelligent people are bound to believe it."

So comments Lorenz, who goes on to present details of analyses by one Helga Fischer documenting more scientifically. that is limiting confounding independent variables and measuring more precisely, for Greylag Geese, different "forms of expression movements arising from the conflict between the drives of escape and aggression."

This is old stuff. Recent work by Steve Porges, Peter Levine and others have opened up new avenues of understanding based on detailed analysis of the so-called freeze response, as when an organism (such as a possum "playing dead") collapses in response to overwhelming danger. Instincts of fight or flight, which involve powerful energetic responses to danger, dramatically and involuntarily switch off. Evidence of this phenomenon includes videos of animals in the wild, observation, experimentation and direct measurement of physiological responses, revealing that under apparent calm, trance or death-like state, there is at the same time intense activation of the original fight/flight responses, now overridden but still present. This is not speculation but powerful evidence which I could elaborate if there were interest.

I think what is required is that you publish the abstract, observations and conclusions arrived at by you and your friends concerning the matter. Have a number of animal behaviourists/(ie. scatological scientists), accept your findnigs by repeating the conditons and outcomes, then it can be called proof. Beyond that, its speculation, by most professional standards.

 

[chemisttree]

So to continue, I fail to see how my collection of odd observations of behavior (reactions to bodily waste) of some animals in some situations constitutes "speculation." They are, after all, direct observations, by others or myself. They constitute some kind of "evidence," admittedly not systematic.

Really? You can 'directly observe' an evolutionary response to bodily contact with feces?
Please enlighten us.
What is speculative in your thesis is that the behavior is innate in the DNA and that there is an advantage to the behavior that results in longer life and increased health. Why don't dogs do it as well? And rabbits and raccoons and...? Wouldn't it be and advantage to every species? Why only cats?

About times when one set of instincts are altered or suppressed altogether by a different set of instincts or times when two sets of instincts conflict: As it happens, evidence of the way different instincts suppress or modify one another has long been documented, including by Nobel Prize winners Niko Tinbergen and Konrad Lorenz. Here from Lorenz's 1963 work later translated On Aggression, chapter 6, "The Great Parliament of Instincts."

Why are you bringing this up? Is this supposed to support your thesis that cats bury their waste because is leads to healthier living and longer life? What competing instincts are you comparing in the case of burying waste? The instinct to bury or not to bury? Is this directly analagous to a flight or fight response?

"It is the simplest form of interaction between two conflicting drives when one simply suppresses or supplants the other."

"In reality, all imaginable interactions can take place between two impulses which are variable independently of each other."

None of this supports your thesis.

"A simple example. . . is represented by the way in which a dog moves its facial muscles when torn between the drives of fight and flight. The resulting expression, which is generally called threatening, occurs only when the tendency to attack is inhibited by fear, even a small portion of fear."

Have these facial expression been observed in the wild when cats bury their waste or is this just another bit of logical flotsam? What evidence is presented that these expressions and the underlying instincts are arrived at by some evolutionary adaptation? A grimace? A threatening stare?

This is old stuff. Recent work by Steve Porges, Peter Levine and others have opened up new avenues of understanding based on detailed analysis of the so-called freeze response, as when an organism (such as a possum "playing dead") collapses in response to overwhelming danger. Instincts of fight or flight, which involve powerful energetic responses to danger, dramatically and involuntarily switch off. Evidence of this phenomenon includes videos of animals in the wild, observation, experimentation and direct measurement of physiological responses, revealing that under apparent calm, trance or death-like state, there is at the same time intense activation of the original fight/flight responses, now overridden but still present. This is not speculation but powerful evidence which I could elaborate if there were interest.

It (cats bury their waste due to an evolutionary pressure based on health and long life) isn't speculation because a nobel prize winner studied facial expressions?

You call that "powerful evidence"?

 

[Rebecca Moise]

One might directly observe reactions to bodily waste. Whether and to what extent any of these might be an "evolutionary response" involve thinking about the observation, including thinking about how instincts operate generally. In response to Stochastic's Feb. 9th raising this issue, are instincts "largely inheritable and unalterable"? If so how to account for variation? To what extent might there be choice? I suggested it might be useful to think about different sets of instincts modifying one another. When asked for evidence that instincts modify one another, I went back to well-researched and well-recognized studies that seemed to demonstrate just that. With a clearer ideas of what kinds of things instincts are generally, one might later return to the question of reactions to bodily waste to see if this sheds any more light on the question.

 

[baywax]

If a species that buries its feces survives longer as a result, then humans (who mix their feces with their ground water) don't have much longer to go. Long live the composting/combusting toilet.

 

[Rebecca Moise]

I don't think humans do fare very well when they mix feces with drinking water.

In the animal world there are many ways of avoiding excessive contact with feces. Mole rats build specialized "latrine chambers" in their underground habitats. A new paper in Animal Behavior examines alternative ways to handle the sanitation issue. . .

http://blogs.discovermagazine.com/discoblog/tag/feces/

Cats burying their feces is a variant of behaviors found in different forms among many animals.

 

[baywax]

I don't think humans do fare very well when they mix feces with drinking water.

In the animal world there are many ways of avoiding excessive contact with feces. Mole rats build specialized "latrine chambers" in their underground habitats. A new paper in Animal Behavior examines alternative ways to handle the sanitation issue. . .

http://blogs.discovermagazine.com/discoblog/tag/feces/

Cats burying their feces is a variant of behaviors found in different forms among many animals.

There was a innovation that was based on our current water bourn method of waste management. I think it was out of the ever imaginative United States. This involved feeding all the sewage lines into a marsh of 1000 acres in size out side of each city. This amount of area provides enough filtration and processing by algae, plants etc... to the degree that... at the other end of the marsh, with no chemical or other "artificial" treatment activities having been required, you have pure, clean running water ready to enter the system again. I'm not sure about the aromatic quality of the system.

 

[Rebecca Moise]

Probably sunlight also had something to do with the purification of the water, ridding it of disease producing organisms. There was a purification process, if natural rather than artificial. Without some kind of purification, the death rate in cities was high, so much so that without constant movement into the cities from the countryside the population could not maintain itself.

Beavers, by the way, do not maintain latrines in their lodges but rather defecate in water which surrounds the lodge. Probably plants, algae, sunlight, and maybe also currents help rid the water of disease producing organisms.

Different species have different methods form managing the disease/waste problem, of which the cat's burying is one variant, one presumably uniquely adapted to that species niche.

 

[baywax]

Probably sunlight also had something to do with the purification of the water, ridding it of disease producing organisms. There was a purification process, if natural rather than artificial. Without some kind of purification, the death rate in cities was high, so much so that without constant movement into the cities from the countryside the population could not maintain itself.

Beavers, by the way, do not maintain latrines in their lodges but rather defecate in water which surrounds the lodge. Probably plants, algae, sunlight, and maybe also currents help rid the water of disease producing organisms.

Different species have different methods form managing the disease/waste problem, of which the cat's burying is one variant, one presumably uniquely adapted to that species niche.

Ah ha. We've got something in common with beavers! Very cool, thank you Rebecca, the beaver is also a national symbol of Canada.

 

[Rebecca Moise]

There is probably a lot to be learned from the behavior of beavers, including the interplay between instinct and learning. If you like beavers you might be interested that a woman named Dorothy Richards observed and wrote about beavers living on her property in upstate NY. Also she raised some beavers in her house.

http://users.snip.net/~qdi/uwr_beaversprite.html

Anthropologist Clifford Geertz made an interesting distinction between what he called "models for" and "models of," as I recall actually using the example of beavers' building projects. We humans, Geertz suggests, think about what we are doing and have in our minds a "model of," for example, building a road or building a house. Geertz thinks this is not true of animals. The beaver goes though certain motions by instinct and the end result is a dam, but animals (Geertz supposes) don't ask themselves why they are doing this, or even necessarily have in their minds an image of what they are doing. Whatever, in their minds, shapes their behavior is a "model for" ending up with a dam, but it is natural selection and evolution that shapes the outcome, not their own planning.

Richard Dawkins describes seeing beavers kept in a cage in a zoo with no access to building materials going through the motions of building a dam (or lodge) with sticks that did not in fact exist. Apparently this was blind instinct, an inclination to behave a certain way that, in the natural environment, would produce dams but which still operated without any possibility of this result.

Dorothy Richards, however, reports that despite her "house beavers" being provided access to a pool of water in her basement and building materials they used to construct lodges, when the beavers discovered upstairs parts of the house, they resourcefully turned on faucets and stopped up drains producing floods. This could not be instinct due to absence of anything like faucets in the environment of ancestral beavers. It seems that in their minds there was also a "model of" creating more water in the environment, and the ability to explore alternative ways of accomplishing this.

Beavers would thus seem to have one set of instincts involving need, pleasure, or inclination to go through the motions of building, along with other instincts involving need, pleasure or inclination to increase water in the environment. It is not that there is no instinct, in the second case, but that there are instincts which actually promote learning.

I guess the thread was confused some time ago, but not to lose it completely, consider instincts involving bodily waste. Some animals (not all) have an instinctive inclination (need?) to be clean. The cat may lick itself because it feels a need to do this, even when it is not dirty, but might also clean with special urgency when there is actual dirt. With more intelligence there can be more figuring out different means of accomplishing the instinctually-dictated end, such as a chimpanzee wiping its own or another chimp's messy bottom with leaves (as observed by Jane Goodall). Alternatively an animal might go through motions dictated by instinct without accomplishing anything other than going through these motions. Sometimes I have seen a cat make the motions of burying feces outside the litter box, with the feces still inside the box uncovered. Possibly it did not like the feel of the litter on its paws. It might be worthwhile to think about the implications of these different kinds of instincts, especially as regards the question of instincts that promote learning still influencing human behavior

Anyway beavers are interesting animals. I did not know they were the national symbol of Canada! In the United States too many people don't like beavers.

 

[baywax]

There is probably a lot to be learned from the behavior of beavers, including the interplay between instinct and learning. If you like beavers you might be interested that a woman named Dorothy Richards observed and wrote about beavers living on her property in upstate NY. Also she raised some beavers in her house.

http://users.snip.net/~qdi/uwr_beaversprite.html

Anthropologist Clifford Geertz made an interesting distinction between what he called "models for" and "models of," as I recall actually using the example of beavers' building projects. We humans, Geertz suggests, think about what we are doing and have in our minds a "model of," for example, building a road or building a house. Geertz thinks this is not true of animals. The beaver goes though certain motions by instinct and the end result is a dam, but animals (Geertz supposes) don't ask themselves why they are doing this, or even necessarily have in their minds an image of what they are doing. Whatever, in their minds, shapes their behavior is a "model for" ending up with a dam, but it is natural selection and evolution that shapes the outcome, not their own planning.

Richard Dawkins describes seeing beavers kept in a cage in a zoo with no access to building materials going through the motions of building a dam (or lodge) with sticks that did not in fact exist. Apparently this was blind instinct, an inclination to behave a certain way that, in the natural environment, would produce dams but which still operated without any possibility of this result.

Dorothy Richards, however, reports that despite her "house beavers" being provided access to a pool of water in her basement and building materials they used to construct lodges, when the beavers discovered upstairs parts of the house, they resourcefully turned on faucets and stopped up drains producing floods. This could not be instinct due to absence of anything like faucets in the environment of ancestral beavers. It seems that in their minds there was also a "model of" creating more water in the environment, and the ability to explore alternative ways of accomplishing this.

Beavers would thus seem to have one set of instincts involving need, pleasure, or inclination to go through the motions of building, along with other instincts involving need, pleasure or inclination to increase water in the environment. It is not that there is no instinct, in the second case, but that there are instincts which actually promote learning.

I guess the thread was confused some time ago, but not to lose it completely, consider instincts involving bodily waste. Some animals (not all) have an instinctive inclination (need?) to be clean. The cat may lick itself because it feels a need to do this, even when it is not dirty, but might also clean with special urgency when there is actual dirt. With more intelligence there can be more figuring out different means of accomplishing the instinctually-dictated end, such as a chimpanzee wiping its own or another chimp's messy bottom with leaves (as observed by Jane Goodall). Alternatively an animal might go through motions dictated by instinct without accomplishing anything other than going through these motions. Sometimes I have seen a cat make the motions of burying feces outside the litter box, with the feces still inside the box uncovered. Possibly it did not like the feel of the litter on its paws. It might be worthwhile to think about the implications of these different kinds of instincts, especially as regards the question of instincts that promote learning still influencing human behavior

Anyway beavers are interesting animals. I did not know they were the national symbol of Canada! In the United States too many people don't like beavers.

My brother blew up the beaver dams on his property up in northern BC. They just keep coming back. The firstnations people hold the beaver in high esteem. Their carvings of them are incredible.

I've swam with beavers at the bottom of a buffalo jump. They are very private and they don't chew your leg off. They like the little shoots of new trees best. But they took down some bigger ones probably for building their lodge. I feel sorry for them when the jet skis and other crap like that screw with their habitat.

So this instinct to build and to slap the tail as a warning and all these specific traits are found only in the specific species. Its also seen in the specific markings of each species. Lions and tigers are marked differently, you'll never see a striped lion. Each adapting to the light and shade of their region... in an autonomic fashion. Cool

 

[Rebecca Moise]

The first nations people were wise to hold the beaver in high esteem. They are both intelligent and extremely social. Both parents help raise the kits. When offspring become sexually mature, they leave their mother and original home to go off on their own. Mrs. Richards observed, however, that the father beaver accompanied them on their initial journey remaining with them a while longer. Each species has its own way of doing things, and there is probably much to be learned about different ways, for different species, of avoiding, or limiting, incestuous matings.

Our family became interested in beavers when we bought a lake in Michigan where there were beavers. The realtor was talking about blowing up the lodge to "make a nice beach" and we hoped, by getting enough family members to contribute that we could buy the whole lake, to prevent any such thing from occurring. As we learned more about beavers we were glad we had made this effort.

 

[baywax]

The first nations people were wise to hold the beaver in high esteem. They are both intelligent and extremely social. Both parents help raise the kits. When offspring become sexually mature, they leave their mother and original home to go off on their own. Mrs. Richards observed, however, that the father beaver accompanied them on their initial journey remaining with them a while longer. Each species has its own way of doing things, and there is probably much to be learned about different ways, for different species, of avoiding, or limiting, incestuous matings.

Our family became interested in beavers when we bought a lake in Michigan where there were beavers. The realtor was talking about blowing up the lodge to "make a nice beach" and we hoped, by getting enough family members to contribute that we could buy the whole lake, to prevent any such thing from occurring. As we learned more about beavers we were glad we had made this effort.

My brother's land was a new thing to him. And he fancied himself a settler. I was a bit hard on him about his intervening with the beavers but he's also 6'8" tall so I didn't press it. Besides, they were flooding the cabin he built. It only took about 2 winters to get him out of there anyway. I'd be more concerned about the logging practices in that area. Clear cuts don't leave anything for the beavers, including their lodges. This has slowed to a dead halt now because of the Pine Beetle infestation. It has devastated the forest and forest industry in BC. Another challenge to the survival of many species in the area... including the human species.

 

[Rebecca Moise]

It can be difficult, even confusing, to think about instincts in the abstract. If I could venture, again, into this seemingly forbidden territory: if we say a cat's burying and cleaning behaviors are "instincts" what are we saying? What do we know about instincts generally?

Instincts help shape behaviors promoting survival and reproduction. Animals, however, possesses different sets of instincts some of which may conflict with others. Lorenz wrote: "all imaginable interactions can take place between two conflicting drives." Observation of conflicting impulses of rage and fear in the body language of dogs or geese do not speak to the evolution of burying-feces behavior in cats, but arguably tell us something about instincts generally. I wrote in an earlier post: "There are times when one set of instincts might be altered or suppressed by a different set of instincts." This elicited the maybe surprising comment, "More BS. Where's the data supporting this latest round of speculation?" Surprising because I thought this point relatively uncontroversial, supported as it is by old and recognized data of Lorenz, Tinbergen and others. I cited just two studies providing what seems to be careful evidence for their contention (which I learned from reading their works) that animals possesses different sets of instincts which infuence one another and may conflict with one another.

I thought it was worth responding in detail, actually citing a fraction of the evidence, in part because this seems so fundamentally important to understanding instincts generally. We think of instincts as "fixed" but then see variation in apparently "instinctive" behaviors. How to explain this? Maybe interaction between different sets of instincts, as demonstrated by work the value of which was recognized by the Nobel Prize for Medicine in 1973.

Where, now, is the argument? Bodily waste can carry disease. Many animals (not all) in many circumstances (not all) behave in way to limit contact with bodily waste. The exact method of limiting contact varies across species. At least part of this seems to be "instinctive." A kitten, only a few days old, was observed using the litter box. The question was raised whether this supports Lamarckian methods of transmission, the kitten's behavior reflecting what past generations of cats had been taught. I ventured to suggest this was Darwinian natural selection. Animals that avoid products possibly carrying disease tend to be healthier, live longer, and thus have more offspring. Given survival advantage of avoiding potentially disease-carrying material, over millions of years, genes promoting such behavior would tend to become more frequent. Instincts may act without the animal having, in its mind, any idea of any connection with disease.

If the animal has a "choice" is this an instinct? Cats and other animals mark territory using urine and feces. Urine and feces may also be a sign of dominance. Under some circumstances even household pets may defecate on their owner's possessions. Is this the animal "choosing" to override the instinct? Or are there conflicting sets of instincts such as instincts governing body waste avoidance and instincts governing dominance? Can one set of instincts "turn off" another? Here studies of Tinbergen, Lorenz and others shed light, suggesting properties of instincts generally, although not this specific case (as far as I can remember). These studies might help explain how individual cats manifest urges related to cleanliness, one the one hand, and dominance on the other.

Actually there are several dimensions: limiting contact with bodily waste, marking territory, dominance, and expressions of other social (or antisocial) impulses such as using urine or feces to express displeasure toward another member of the group.

 

[JorgeLobo]

lol - she's still at it - such trash, and so much of it!

 

[BoomBoom]

If the animal has a "choice" is this an instinct? Cats and other animals mark territory using urine and feces. Urine and feces may also be a sign of dominance. Under some circumstances even household pets may defecate on their owner's possessions. Is this the animal "choosing" to override the instinct? Or are there conflicting sets of instincts such as instincts governing body waste avoidance and instincts governing dominance?

There is always a choice to override an instinct IMO. An instinct would be just a tendency to react or behave a certain way in certain situations, but there is always a conscious choice. Animals can certainly be trained to not act on their instinctive behaviors. I see no reason why anyone would want to, but I bet you could train a cat NOT to use a litter box.

After all, humans tend to avoid feces...is this instinctive, or does it just smell really bad to us? Which brings up another interesting point: are sense of taste and smell and what we consider good and repulsive instincts?

I see no reason in genetic heritage why instinctive bahaviors being passed down should be any different than the nature of any other gene or regulatory element being passed down.

 

[baywax]

I would imagine that an instinct would develop (read ''evolve") in each species that is directly related to a natural selection resulting in fewer deaths from infection etc... (due to contact with each respective species' feces).

So that the related behavior we observe in various species is a result of natural selection. However, it can be modified in a de-evolutionary manner as can be observed in the Human species with regard to their tendency to contaminate their drinking water with the specie's feces () .

 

[Rebecca Moise]

There is always a choice to override an instinct IMO. An instinct would be just a tendency to react or behave a certain way in certain situations, but there is always a conscious choice. Animals can certainly be trained to not act on their instinctive behaviors. I see no reason why anyone would want to, but I bet you could train a cat NOT to use a litter box.

After all, humans tend to avoid feces...is this instinctive, or does it just smell really bad to us? Which brings up another interesting point: are sense of taste and smell and what we consider good and repulsive instincts?

I see no reason in genetic heritage why instinctive bahaviors being passed down should be any different than the nature of any other gene or regulatory element being passed down.

"It smelling really bad to us" IS the instinct. At least if we define instinct as something like "genetic behavior mechanism." Taste, smell, things striking us as good or repulsive, are the means by which instincts manifest themselves. Instincts consist of emotions, feelings, sensations, tendencies to act, not thoughts, although it becomes interesting when animals such as human beings reach the point of thinking about their own instinctual impulses. And yes indeed, transmission of instincts from one generation to another should be like any other gene being passed down.

I don't know if there is always a choice with instincts even for human beings. It would be interesting to find examples when choice seems to exist, and when it doesn't.

Also, at some point, there might be a need to consider the definition of "instinct." Should this word be used for any genetically-shaped behavior, or only some genetically-shaped behaviors? If only some, what other words might be used? Drive? Impulse? Urge? "Genetic-behavior pattern"?

JorgeLobo, I see your not going to let me forget the visceral dislike many experience talking about instincts. If you felt like it, however, you might also discuss your own evidence, thoughts or speculation for or against specific ideas. What do you make of the work of Tinbergen and Lorenz? Was this not "scientific" by any reasonable standard? Tinbergen, I would say, from what I have read, was appropriately careful talking about both human and animal behavior. Lorenz was OK talking about animal behavior, perhaps not so much trying to apply his ideas to humans, but at least he tried to tackle an important topic.

 

[BoomBoom]

I don't know if there is always a choice with instincts even for human beings. It would be interesting to find examples when choice seems to exist, and when it doesn't.

Well let's say someone has a tendency to be really shy. They could make a conscious effort to change their behavior and become more outgoing. Although I'm not sure if this example could be considered an "instinct", but it would be a genetic behavioral tendency that they inherited, and I see no reason why it should be any different than an instinctive behavior that is inherited.