My eight year old dog loved to get under his dog beds and hide. Now as he is older, his back did not allow him to burrow anymore. I bought this for him and he loves it. He crawls in and just enjoys the view. I would recommend placing this against a wall as they can "fall" off the back of the cushion if they crawl all the way to the back. I bought the medium for my 30 pound pooch and it is a very good size.