Yes I only have adult guinea pigs, soon to be five of them. So a sand boa, probably a desert one will stay very small? How thick would he get? I don't think I will really mind the frozen food, could just pinkies be a staple diet for him? Just definitely not live food, which I have heard is a big no no anyway. But what about the smell of my guinea pigs in my room, would that make him aggressive? Or if I keep him fed like he is supposed to will it even make a difference? They will be across the room from eachother, 10 feet or so. I just want to have all the bases covered, I am not one of those people who will get a pet that won't fit in or to get a pet to replace another.