My kitty is the sweetest thing! She loved "Willy" when he first got here. My Dad's cat had to come live with us for a few months because Dad was in the hospital. Willy is a male and my kitty Pipi is a female. They act like they like each other and play together. Just this past 2 weeks Pipi is puking up her food and pulling hairs out of her tail. She didn't do this before. Willy is a puker according to Dad. Now Pipi is too AND pulling hair out of her tail....HELP??!!