i'm guessing that they have different temp. and humidity needs, plus i'm pretty sure the other constant captive roommates would add to the stress of your ball. i'm guessing most will agree that it would be better to keep the bp separate. that would be a neat little environment though but yeah...i'm still going to go with separate. i saw on a show today that cobras in tanzania normally eat amphibians and i don't know, if the bp gets wind of that...you knows.....jk.