We got this for our Chihuahua who loves to bask in the sunshine. Since our yard is currently all dirt, that means she lays in the dirt, then brings it all back in the house. So far she hasn't gone up there on her own, but I figure she will figure it out soon enough. My husband said it was super easy to put together. It's not the highest quality wood or anything, but for less than $100, it's great.