A great list on Flavorwire of Kurt Vonnegut’s many definitions. Vonnegut on animals:
Dinosaur: A reptile as big as a choo-choo train. Had two brains, one for its front end and one for its rear end. Extinct. Both brains combined were smaller than a pea.
Lamb: A young animal which was legendary for sleeping well on the planet Earth.
Shit-poo: A crossbreed; half French poodle and half Chinese Shih Tzu.
The Kurt Vonnegut Dictionary of his Imagination [Flavorwire]