The reason why cats bite their children may be because they want to express their dissatisfaction or dislike. Cats usually bite because they feel threatened or are worried about being hurt, so they bite to protect themselves. If a cat bites your child, you should help the child clean the wound immediately and help them control bleeding. If the wound is severe, you should seek medical attention immediately.
In addition, you should consider providing your cat with appropriate stimulation and activities to help them stay healthy and happy. This can help reduce your cat's biting behavior on children. You should also teach children how to interact with cats, such as not to pinch the cat's face or tail, not to chase the cat, and not to ignore the cat's needs. If you notice that your cat's biting of your child becomes frequent or severe, you should consider consulting a veterinarian or an animal behaviorist for more information and help.