Isabelle is my one year old cat. This morning I noticed she was doing something I have never seen her do before. She is pawing at the ground like she would if she was covering up her "mess" in the litterbox. She hasnt had an accidnet, and she is doing this in random spots, mostly by the food though. Its werid I've never seen her do that unless she was covering up her poop in the box. What could it mean?