Cats

Cats twitch the tips of their tails when hunting or angry, while larger twitching indicates displeasure. A tail held high is usually a sign of happiness. A half-raised shows less pleasure, and unhappiness is indicated with a tail held low. A scared or surprised cat may puff up its tail and the hair along its back and turn its body sideways to a threat in order to increase its apparent size. Cats with no tail, such as the Manx, who possess only a small stub of a tail move the stub around as though they possessed a full tail, though it is not nearly as communicative as that of a fully tailed cat. Touching noses is a friendly greeting for cats, while a lowered head is a sign of submission.