Must be! I have a well-worn sweater that I've put down on the floor inside the office door and Coco, the slipper lover, lays on it all the time.

I had a friend who told me her cat used to dig through her hamper, pull out her dirty underwear and chew the crotch out of them. Ewwwwwwww! :/ I guess I'm pretty lucky, all things considered.