Cats biting their nails may be caused by discomfort, too long nails or boredom. The owner should deal with the specific reasons. Cats are very clean animals. If their nails are dirty or too long, they will bite their nails. Pay attention to cleaning the cat's claws to prevent the growth of bacteria. In addition, trim the cat's nails regularly. Sometimes the cat's nails are too long and may scratch itself. Spend more time with the cat to prevent the cat from feeling depressed and depressed.