I needed a cage that I could keep my cat safe at night since she is not an indoor cat. It works great and she has no problem going into it at all. Having the four doors are a plus.  I added a little bed to the second shelf by zip tying it on.  She cuddles up in it. It took me a little while to put it up, but once I locked the two bottom latches it was secure. I love having the attached wheels too. This was exactly what I was looking for.