I'm assuming he is just trying to absorb another animal's smell, right? He can do that for a while (digging and rolling around the hole). Could it be any other reason?
Dexter ADORES the smell of Bounce. He will run after the sheets if they fall off the dryer. As soon as I was my bed, he'll go roll in it.Puck does that but I usually see him doing it on our bed or the carpet, we say he does it because his face itches.