Uh-oh; this started some feistiness on another thread about rats! Like the saying goes, beauty is in the eye of the beholder, and when you love a pet, you believe it to be the most beautiful in the world. That said......my least favorite would be anything in the insect family, followed by anything in the crustacean family. I don't mind reptiles, but I wouldn't want to own any. I like most rodents, but I think the hairless rats are scary-looking. I don't really care for birds; although I think a lot of them are very beautiful, their beaks and feet kind of freak me out. I've never owned a dog, but I like dogs and I tend to act as goofy over them as I do about cats, with the baby-talk and extreme petting when I meet them. I TOTALLY LOVE CATS! There are some breeds of dogs and cats that I don't find particularly attractive, but I won't list any of them here. As far as wild animals - well, I haven't seen too many in my lifetime, other than in books, but yes, those poor opossums are really homely.