From "great quotes about pets" at barnorama.com:
"No animal has more liberty than the cat . . . the cat is the best anarchist." -- Ernest Hemingway
The manliest man in all of literature, and he was a cat person. Take that, dog lovers. Hemingway's six-toed cat has achieved legendary status.
Oh, OK, props for dogs, too:
"The greatest pleasure of a dog is that you may make a fool of yourself with him and not only will he not scold you, but he will make a fool of himself, too." -- Samuel Butler
(Nice pics at the site, too.)