When a cat arches its body, it is usually preparing to attack or jump, mainly to increase the explosive power of the body. This action can be seen in many felines. Moreover, cats arching their bodies is also a way of communication between them. We can often see that when two cats meet, they usually do not face each other head-to-head, but face each other diagonally. This is to be able to see whether the other party's back is Bow, so as to determine whether the other party is angry. If the cat arches its back, raises its tail straight up, and has explosive hair, it is probably frightened or very angry, and is warning the other party.