The reasons why cats like to rub their buttocks:
1. The cat’s litter is not clean, causing the cat to feel a bad smell when going to the toilet. If the cat runs out without cleaning, the cat will rub its buttocks on the ground. Rub it clean.

2. When a cat has soft stool or diarrhea, there may be feces on its butt, so it will choose to rub it off on the ground.

3. Some cats have blocked anal glands. When the cat feels uncomfortable, it will rub on the ground to relieve the discomfort.

The functions of anal glands in cats that like to rub their buttocks:

1. When cats take up space, they may leave their anus on some objects or animals. Glandular fluid.

2. When a cat is frightened, stressed or emotionally stressed, it will also involuntarily release anal gland fluid to maintain itself.

3. When cats defecate, the anal glands secrete liquid to help moisten the intestines and prevent constipation.