I can believe that climbing on the wire a lot could be bad for their little toes. These guys rarely touch the wire, though. They love the kitty litter pan and each has a favorite plant to hide in. I also see them sometimes on the peat moss or newspaper or in the food dish. I'm going to be adding a hygrometer to their setup to check min and max humidity, but with summer coming and ambient humidity of 80%-90% pretty normal around here, I don't think it'll be a big issue for several months yet.

And as I said, these guys will likely be moving to a spare rubbermaid with more ventilation than usual in anticipation of adult cresteds moving into this one. If I have problems with shedding or toes or anything, I'll re-evaluate use of the cage. I certainly don't want to cause them any problems, but I'm not convinced the cage will be a problem yet.