Hmmm it could be either one. My beardie comes up to this one rock in his cage every time he wants some crickets haha but sometimes he just likes running up to the glass and looking around so I take him out for a while.
my beardie dances at the glass when he's hungry (it's always on the side of the tank where i keep his worm tub). but when he wants out he dances on the other side of the tank, guess that way he's being extra clear about his desires.
his new favorite thing is dancing to be let out right as i'm getting ready to leave for work, which makes it that much more difficult to leave because i always want to hold him when he does that (he's so evil).
Arnold comes up to the glass usually to have a look what's going on around the house, he does this a lot. But sometimes just after I've put him back in his viv he often comes up to the glass as if to say "let me out again". It's kinda cute. :3
Tiki will go BANANAS inside her house. This means, "Hey - Mom - put the cats up and let me out to play. Now. Oh, and make me a salad while you're at it."