 Cats and kittens may bite for very different reasons, and it's important to distinguish between them to help curve the biting. A kitten usually bites because of a socialization issue, while an adult cat may bite for a different reason. Never allow your kitten or cat to play with your bare hands, fingers, or toes. All cats should be taught that hands are not toys. If you offer your hands as toys, you're encouraging a risky habit. Offer an appropriate, interactive toy for the cat to bite. Stuffed animals are at hit with many cats. There should be a variety of toys, at least three, available so your cat does not get bored. Avoid physical punishment, which only makes cats more aroused and more likely to fight back and protect themselves or engage in rough play.