No solution, just enjoy the fun with your pup. Hopefully he will outgrow the digging. Dexter used to be a digger in the bed. He outgrew that! Jack does not dig in the bed, but he does dig once in awhile (especially when he was younger)....I don't notice anymore. Maybe, he outgrew it, but he does like to find stuff in the leaves and eat stuff...I can only imagine what he is eating.
Dexter & Jack
"One Hav is NOT enough to enjoy the RLH skills!"