the cage has thin  wiring so if you have a large dog who does not want to be in the kennel, he can get out. I have a large German Shepard, who was able to bend the door so I almost could not get him out and he peeled up on of the smaller bars, which could have cut him. BUT, if your dog is mellow and does not mind being kenneled this one will work great. The size is perfect for my dog. Giving it four stars only because the bars are not strong enough for tyrant dogs.