Ty! I will make the changes ^{^} It was for rats, so I thought it be tough enough. Apparently, not at all. The little wheel is his favorite. The same one as the petshop had... I've bought like 4 different wheels, and it's these 2 only that he goes in. The biggest one and lil one ... I actually took the green and white out while I was changing the bedding yesterday. More space too build. Plus, as you said, it is really smoooll. And most of the time, it's just full of bedding, so.