My brother Roger has been a busy guy. Check out his pile of stacked wood - no really check it out! It is a dog run! Henry's cousins Bentley and Daisy have tried it out and have put their stamp of approval on the thing. I'm thinking it would be a challenge to fit through the doggie door to clean up the interior, but the dogs would probably like knowing the space is theirs alone. I'm sending Roger a huge thumbs up on this one! Henry is anxious to get up there to explore the space.