The reasons why cats arch their backs:
1. When a cat is having fun and is in a state of excitement, it will keep arching its back, which is a sign of its good mood.

2. If the cat arches its back for a long time, it may be caused by physical pain. The owner should take it to the pet hospital for examination and treatment in time.
3. When a cat feels scared, it will naturally arch its back and the hair on its body will explode.
4. Cats that are deficient in calcium will keep their back arched. You need to take the cat for a checkup. If you are deficient in calcium, you can feed it calcium tablets to improve it.
5. If the cat is infected with parasites, causing local itching and arching its back, the cat needs to be dewormed in time.