Drinking, when we are not thirsty and making love all year round, madam; that is all there is to distinguish us from other animals. – Pierre De Beaumarchais

I subscribe to the theory that Mankind never domesticated any animal. They came in from the cold and looked cute until they were fed. – David Beard, @Raqhun

It often happens that a man is more humanely related to a cat or dog than to any human being. – Henry David Thoreau