Once [a cat] has given its love, what absolute confidence, what fidelity of affection! It will make itself the companion of your hours of work, of loneliness, or of sadness. It will lie the whole evening on your knee, purring and happy in your society, and leaving the company of creatures of its own society to be with you.
— Théophile Gautier, Ménagerie Intime

And how do you know that you’re mad? “To begin with,” said the Cat, “a dog’s not mad. You grant that?” “I suppose so,” said Alice. “Well then,” the Cat went on, “you see a dog growls when it’s angry, and wags it’s tail when it’s pleased. Now I growl when I’m pleased, and wag my tail when I’m angry. Therefore I’m mad.”
— Lewis Carroll, Alice’s Adventures in Wonderland & Through the Looking-Glass

Are cats strange animals or do they so resemble us that we find them curious as we do monkeys?
— John Steinbeck, The Winter of Our Discontent