not trying to argue here, but personally, i think that as long as you have a few nice small hide and some other plant type stuff in there, it would be fine. the way i see it, is that these guys are born in the middle of nowhere naturally with nothing but a rodent hole to feel secure in, so as long as it has that nice cozy hide, i dont think the overall size will matter. plus any cage is smaller than Africa, and im sure they will learn that there arent exacly lions and hyenas and elephants running around in their tank