My 8-year-old Egyptian Mau female has never acted kittenish before. A week ago, she started playing with her tail, like a kitten. She tries to grab it and sometimes chases it in a circle. When she gets hold of it, she licks it for a few seconds and then lets it go. I examined her tail and found nothing out of the ordinary. Is this simply a new game she discovered, or can there possibly be a physical reason for this?