OneEye said:
Finally, we have the double standard which says that humans, as aware creatures, should not harm other animals - while other animals are at liberty to behave according to their impulses. This is an argument against animals having awareness which is, ironically provided to us by animal rights activists, who have a vested interest in assigning awareness to non-human animals.
this really isn't quite the argument put forth by AR - though it is sometimes used to claim a contradiction. it's more like if we know that
we as humans can cause suffering, should
we not make an effort to not do so? i think AR is generally more interested in what humans do to animals (including humans) than what animals do to each other.
however, let's go with it anyway. so
humans are aware, therefore they should not harm other creatures and
animals are aware, but it is ok for them to harm other creatures.
so since both animals and humans harm other creatures, can we discern the degree of awareness from the amount of harm caused? is it possible that the more harm caused (except for sustenance, say) is reflective of the degree of lack of awareness? for instance, some humans cause harm for sport, entertainment, food (that they don't need or even eat). no animal seems to do this to the same degree. does that make animals more aware than some humans? on the otherhand, you have some humans who spend a great deal of time and effort (eg AR activists and others) to stop or minimize harm to others (animals and humans). are these people more or less aware than those humans who do cause harm?
or
is it possible that humans can be sufficiently aware of an animal's sentience to realize that it doesn't want to be harmed, but an animal has sufficient sentience to know that it doesn't want to be harmed, but not enough awareness (like some humans) to realize that other animals also may not want to be harmed.
anyway, since you seem to be interested in AR philosophy below are some nice summaries of ideas of several prominent AR philosophers. they show that there exists a variety in approachs, thought and rationale, but the goals seem to be fairly coherent.
in friendship,
prad
Peter Singer
a utilitarian approach in which there is no presumption of inherent animal rights, but that the interests of animals should be given proper consideration.
http://www.thevegetariansite.com/ethics_singer.htm
Tom Regan
establishes the rights of animals on the basis that they have complex mental lives, including perception, desire, belief, memory, intention, a sense of the future and because an animal cares about its life, that life has inherent value.
http://www.thevegetariansite.com/ethics_regan.htm
Carol J. Adams
brings a feminist's perspective to animal rights linking the objectification of women and other non-dominant humans to a similar attitude towards animals.
http://www.thevegetariansite.com/ethics_adams.htm
James Rachels
argues that scientific knowledge such as the evolution of species and the heliocentric theory alters antiquated views of morality in which only humans have moral worth and that the ability to reason is not usually relevant to moral consideration.
http://www.thevegetariansite.com/ethics_rachels.htm
Steve Sapontzis
uses traditional moral principles such as fairness, protecting the weak, the reduction of suffering cannot be limited to humans because suffering and pain are not exclusively human.
http://www.thevegetariansite.com/ethics_sapontzis.htm