The reasons why kittens like to hunch their backs:

1. When a cat has abdominal pain, it will hunch its back. If the owner finds that the cat has its back hunched for a long time, it is necessary to Take it to the hospital for examination promptly.
2. If the cat enters a new environment and becomes nervous, unadaptable, and will arch its back, the owner should calm the cat's mood in time.
3. When a cat is frightened and runs away in a hurry, it will often arch its back. This is an instinctive reaction of the cat.
4. When a cat just wakes up, it will like to arch its back. This is the cat stretching its muscles, and it will return to normal after stretching.
5. When a cat sees bugs or moving objects and wants to catch them, it will keep chasing them with its back arched.