The first and most important rule when it comes to teaching a kitten to play gently is to not use your fingers as toys. No matter how young your kitten is and whether it hurts when she bites or not, this isn’t the message you want to send to her. Biting flesh is never to be allowed. From the very beginning, have appropriate toys for your kitten to bite during play. For interactive playtime, use toys based on a fishing pole design.