Swanie, but not all the time. He doesn't usually burrow in the middle of the night, but if one of both of us sleeps in a bit, he'll sometimes burrow. And he does burrow in anything that he can get under. It's hard to help him too, you lift the blanket or whatever up and he ignores it. You put it back down and he starts scratching at it. Like, no, mom, I want to do it myself!