DO NOT USE THOSE CUBES! We had a ferret get caught in the wire of the cube. Granted, she is a small girl, but we had to take that section apart and use wire cutters to cut a portion out. It was a pretty scary moment. Remember, ferrets will try to get through any hole they can get their head through. So I don't recommend you use those Cubes . . . Melanee Ellis "The Ferret Lady" www.ferretlady.org [Posted in FML issue 4090]