The cat bites its own tail

First of all, when the cat is bored, it will play with its tail, and the owner can buy it some toys and then play with it; secondly, there may be parasites on the cat's tail, such as fleas, lice, etc., which will cause the cat's tail to itch and make the cat want to stop itching by biting its tail, and the owner can improve its behavior by using deworming drugs.