tails

While dogs wag their tails when they are happy, cats wag theirs when in a stage of conflict, or anger. If a cat has to decide between going through an open door to go outside, or stay inside, it will wag its tail reflecting internal conflict. Otherwise, if you are holding a cat that doesn't want to be held, and it wags its tail violently, you should probably put the cat down before the claws do the talking.

-H.S.