Why does the cat keep biting its own fur?

Cats constantly biting their own fur can be caused by multiple reasons. Under normal circumstances, cats might bite their fur when cleaning themselves. When cats are nervous, scared or have done something wrong, they might also bite their fur. But if a cat frequently bites its fur and always bites a fixed area, it is very likely that there is an itchy symptom on a certain part of the skin. It might have contracted a skin disease like ringworm or be infected with external parasites. When infected with external parasites, the bites or movements of the parasites can cause the cat to feel itchy, thus resulting in the behavior of biting fur. If a cat has fungal or bacterial skin diseases, there will also be itchy skin. In addition, if a cat's fur tangles together, causing it to bite its fur, this is a normal phenomenon. Cats might also over-lick or bite their fur when they are under excessive stress or have depression. It might also be due to stress responses or allergies caused by a lack of care from the owner, changes in the living environment, etc. For example, some cats might bite their fur in winter because of the dry weather, or have a stress response after taking a bath. In conclusion, if you find that your cat is constantly biting its fur, it is recommended that the owner carefully check whether the cat's skin has abnormalities such as scabs, hair loss, dandruff, redness and swelling. If necessary, the cat should be taken to the pet hospital for examination and treatment in a timely manner. At ordinary times, attention should also be paid to providing the cat with balanced nutrition and a clean living environment.