Skippy is thrilled with his new house and so am I. He was too big to fit in his old house and he really felt uncomfortable there. Yesterday I finished this new one and he liked it from the start. He was so happy about it that I was glad I had spent so much time building it. You can't see the details but it is 80% anti-hamster teeth. It's metallic. He can only destroy the front part but I've got a spare one just in case.