Have had this for almost six months now and am still very happy with it.We got this when our English Setter puppy first came home. She was tiny then and this was where we kept her when we were out of the house or when we were home but couldn't watch her closely. Her kuranda bed and food/water bowls fit in there with enough room for her to still move around. Now she's almost 8 months old and almost full grown and we still use this as her safe place. She can jump up on it and has never knocked it over, it's a good height to keep her in. Really happy we got this and it has held up very well.I think if you had a large or giant dog who was raised with this as their playpen I think it would be fine. If, however, you were to put an giant dog in this who had never been in one before and who was trying to get out, they could knock it over and possibly even injure themselves if it collapsed with them inside it.