I define better pet as in the pet that is generally is better for reducing stress levels. I currently own a cat but I always wondered if I would enjoy owning a cat more(particularly because my cat favors my sister and is a bit jumpy around me) than owning a dog. I was also considering buying another cat but I want one I can train to prefer me over my sister. What pets do you guys own, what do you do to maintain your pets, and in the end is it worth it(in terms of stress gained - stress lost)? Excuse me if I'm oversimplifying but I'm sure you guys get the gist of what I'm trying to ask. My parents say that a dog is too high maintenance and that dogs are a trouble to own. I have to live by my parents rules until graduate school so the only way I can own a dog anytime soon is if I convince my parents it's a good choice. Dog owners, feel free to posit arguments as to why dogs may be better than cats. The same goes for cat owners.