Why do cats bite people when they are happy?

Cats do not typically bite people when they are happy. Cats generally bite when they feel threatened, scared, or in pain. If a cat is biting you, it is essential to try to understand what is causing the biting behavior and address the underlying issue. For example, if the cat is biting because it is scared, try to create a more relaxed and comfortable environment for the cat. If the cat bites when pet, be gentle and avoid petting the cat in areas it doesn't like. If you are concerned about your cat's biting behavior, it is best to consult a veterinarian or animal behaviorist for professional advice.