Why do animals dominate animated cartoons? Because their reaction to any kind of stimulus is expressed physically. Often the entire body comes into play. Take a joyful dog. His tail wags, his torso wiggles, his ears flap. He may greet you by jumping on your lap or by making the circuit of the room, not missing a chair or a divan. He keeps barking, and that's a form of physical expression, too; he stretches his big mouth. But how does a human being react to a stimulus? He's lost the sense of play he once had and he inhibits physical expression. He is the victim of a civilization whose ideal is the unbotherable, poker-faced man and the attractive, unruffled woman. Even the gestures get to be calculated. They call it poise. The spontaneity of the animal--you find it in small children, but it's gradually trained out of them.
- Walt Disney