Dogs don’t know what they look like. Dogs don’t even know what size they are. No doubt it’s our fault, for breeding them into such weird shapes and sizes. My brother’s dachshund, standing tall at eight inches, would attack a Great Dane in the full conviction that she could tear it apart. When a little dog is assaulting its ankles the big dog often stands there looking confused — “Should I eat it? Will it eat me? I am bigger than it, aren’t I?” But then the Great Dane will come and try to sit in your lap and mash you flat, under the impression that it is a Peke-a-poo.

Cats know exactly where they begin and end. When they walk slowly out the door that you are holding open for them, and pause, leaving their tail just an inch or two inside the door, they know it. They know you have to keep holding the door open. That is why their tail is there. It is a cat’s way of maintaining a relationship. 

Housecats know that they are small, and that it matters. When a cat meets a threatening dog and can’t make either a horizontal or a vertical escape, it’ll suddenly triple its size, inflating itself into a sort of weird fur blowfish, and it may work, because the dog gets confused again — “I thought that was a cat. Aren’t I bigger than cats? Will it eat me?”