Even if I have 2 males, should I not have one? I don't know if that'll cause them to fight or not. But one really likes to sleep inside things and the other likes picking at items. So I was thinking it'd be fun for them, IF it didn't make them territorial and fight. They do have a grass hide that I made from a grass mat and they aren't fighting any more than they already bicker. Which isn't a lot, more so looks like they're just playing. Not biting or screaming. Just take turns following and chasing each other around the cage. Then they stop and do their own things.That is correct, all too often they are seen as a nesting site and serve to stimulate hormonal activity.