Why Do Cats Wag Their Tails. Just like the wagging of their tails. Why do cats wag their tails when sleeping?
This is an angry tail movement characterized by thrashing and mumbled growls. If a cat wags his tail, it could mean that he's about to get aggressive with another cat. Relaxed cats often wag their tails just as a natural movement when they are calm and peaceful.
It depends on your relationship with your cat.
It also could mean that he feels intimidated by another individual's actions and is about to go into protective mode. This type of tail wag is different from the prior one of confidence. Cats wag their tails when they’re feeling scared. Cat tail language is really sophisticated and can be an excellent indicator to your kitty’s emotions.