This is great. I have a small Shih-Tzu and we use this as her "room". She sleeps here at night in her pet bed, and her food and water bowls are here too. The little door stays open during the day so she can go in and out as she pleases. It's not too big, yet it's big enough for her to have some room to play. I would not use this for a dog larger than the toy breeds. It's only about 2 feet high so a larger dog could just jump right over.