I have a mix of both males and females in my vivarium and they don't care whose who. Whoever is closer gets the attention, wanted or not. About the only time they aren't doing the toad nasty with each other is when it is feeding time, though one of my brownies is quite skilled at mounting and eating at the same time. He has a gift-I'm trying to figure out how I can make millions off of it. So far, nothing has leaped (no pun intended) to mind.