Theres no way my cat is going to fit inside this enclosure. If your cat poops any sort of standing up position, it will hate this thing. If your cat is large, it will not even walk into this thing. Now I have to figure out what Im going to use this for. Easy to put together despite the vaugesmall picture directions. You will need a drill because for 2 random parts (backclip stabilizer and the optional plastic feet) mallet was a must for the inner door stopper. I was really excited for this too....blah