Well, I was just looking at the thread about your animal's cages and really liked one of the set ups I saw, so, I pm'd the poster about it. But, I don't know.....I don't want to jack up Luli's respiratory system, that's for sure. She's alone anyway, and, she's out of her cage enough, I don't think she's suffering for room. But, I do plan on getting at least a couple more rats, and, would really like to make a cage for them when I do. I just don't think Luli would respond well to another rat after so long being by herself. She had a buddy, but, she died. Her name was Gwynnie. She was also hairless.