We got the medium size for our 13 lb Yorkie-poo and it’s a little large. The cone at the top is very tall. I would also say that the bed cushion that comes with it is very thin and not super comfy for the pup. I might make a new one. Other than that I love the cozy cave to let our pup feel safe . I also love the chic coloring. It looks great in our space.