Not a young dog but similar experience last week, lakey dog was going daft at the piece of grass trying to rive it out above the holes. Put him down near the holes and he kept bolting back up to the same spot, in the end managed to get him in the hole and away. Sure enough after 10 mins he was up at the spot he was going daft at, sod off and it was a pot lid underneath and there he was with his quarry. Thats one reason i'll never gee a dog on to enter a earth, this dog wont entertain them if nothing home.