My 5 month old veiled chameleon, Flash, hasn't been himself lately. He's in the middle of shedding, but I don't think that is why he's been acing this way. His eating habits seem normal, but occasionally he will turn a very pale green and become very still. He'll close his eyes and appears to be sleeping. But when we touch him in this state and try to rouse him, he has no reaction. The first time he did this, we thought he was dead! We are very worried about our little guy. What should we do?