This is for Maxattack and Sagelover. Keep allowing your bd's that fun of exploring outside of their viv's. I do believe they enjoy it(once they get used to it).I imagine at first it's got to be pretty scarey for them, they are out of their comfort zone or safe haven (you'd be scared too). As for the aggression you are seeing, you may just be startling them. If they are going off in some small place and sleeping like you said, they are probably sound asleep when you try to pick them up. Remember, when they are away from their heat their bodies tend to start shutting down and they become lethargic, so they sleep deeper.My bd is out of her viv for hours at a time each day. She'll explore for a while and then find one of her many hiding spots and go to sleep (get used to that..it only gets worse as they get older.Enjoy all that energy they have now while they're still little). When we do pick her up to go back to her viv we have to slowly wake her up. We stroke her real gently on her back and head.Trying to get her awake enough so she knows we are there. More than not she will puff up.Just keep stroking and talking to them. One thing a bd does not like is being startled or woken abruptly, they automatically go into defense mode. Keep trying with your beardies. Eventually it'll work out. Also. I think it was Maxattack who was worried about your bd getting cold being out of its viv too long. I'm here to tell you from experience my girl has been out of her viv everyday of her life (going on 5 yrs) anywhere from 15 min. to 5 hrs without any heat(unless we were outside) and she is fine. In fact she looks forward to her time out. She gets upset when we put her back (like Ethelia's bd)clamoring at everything as if to say " No, not yet ". As long as your home is not freezing cold your little one should be ok. I hope I was of some help. If Anyone has a problem with my answer let me apologize now. Everything I have said is strictly of my own personal experience with my own beardie....Dawn