Archie is usually very carefull when she plays. She keeps her claws retracted, doesn't kick, and doesn't bite hard. But sometimes she likes to play rough. I will wrap my hand in a towel for protection, and she will slit her eyes, lay her ears flat, and growl as she bites my hand. She holds on with her front claws and kicks with the back. I think she has fun. I think its her way of exercising, or practicing her skills in case she ever has to fight off another cat.