My oldest cat (10 years), Tygar, lately has been carrying around 2 of my fuzzy balls of yarn, at all hours, meowing like she's concerned about them. If you go to her, she will drop the yarn and look at you, but act like nothing is going on. If I put the yarn into its basket she will get the same two balls out again and again. I was wondering if it was possible that she thought the yarn was kittens and there was a problem with them. She lost one of her babies when she was much younger.