Hey all. I've recently started a small rat breeding set-up. I got them a Rat Manor cage from Petco, which is about 16"x22"x32" iirc. Now, a bit of research tells me that this is enough space for just 3 rats. But then I see people with tubs with 4 or 5 rats? This makes me wonder, how many rats do you think I could actually keep in this thing?

http://www.petco.com/product/106171/...escription-tab