Hello, I recently purchased what looks like a large hamster ball (the kind the hamster goes in and runs around the house in) for my ferrets. The box said it was made for ferrets and they seem to like it but I am wondering if anyone has had any bad experiences with them aside from the obvious "don't let him roll around the top of the stair case" things. I bought it so the ferrets could run around the house without having to lock my dogs up, unfortunately my dogs and ferrets do not play together. Thanks!! Nikole Biscuit, Bear, Popeye and Sugar [Posted in FML issue 3734]