as for keeping two males together i wouldn't risk it. males are most always territorial once they reach breeding age and can inflict some pretty nasty wounds when fighting. the second i put my male into an enclosure with a female he starts rattling his tail and stalking her, checking to see if she is male or not. (males rattle their tails--females don't. if the other leo rattles back the first male knows it is a male and challenges him.) he is a super sweet gecko but put him in an enclosure with another leo and he's ready to rumble if that's a male on his turf.