It may be that the cat's hair alternates between old and new. The dead hair attached to the surface of the body is not shed in time, is combed off by the owner or licked off by the cat in time. These dead hairs will be entangled with the new hair, coupled with static electricity, skin The grease on the surface and some sticky substances in daily life can easily cause hair to become tangled.

In addition, during the daily movement of cats, the hair will rub and the hair will become tangled together. If it is not combed in time, knotting will also occur. This is why hair knots often appear under the belly, at the base of the front and rear legs, perineum, and under the tail.

The knotting of the cat's hair is also related to the owner's diligence. For example, the cat's hair is combed or groomed too infrequently, or when bathing, using human shower gel will damage the skin and hair roots, and not drying after bathing.

A very small number of cats’ hair knotting is caused by pathological reasons. Many endocrine diseases (hyperthyroidism, diabetes, etc.) and malnutrition can cause cats’ hair to become messy. Combining the above factors makes it easier to knot. In addition, food allergies can cause itching in cats, and frequent scratching may also cause tangles in the cat's hair.