Unlike dogs , cats do not have a sweet tooth. Scientists believe this is due to a mutation in a key taste receptor. When a cat chases its prey, it keeps its head level. Dogs and humans bob their heads up and down. The technical term for a cat’s hairball is a “bezoar.”. A group of cats is called a “clowder.”. A cat can’t climb head first down a tree because every claw on a cat’s paw points the same way. To get down from a tree, a cat must back down... Cats make about 100 different sounds. Dogs make only about 10.

I copied this from google btw

:D