I saw my BP do this twice today, I don't hear any noise when this happens but he just opens his mouth super wide and just continues on what he is doing. I did change out his substrate today to the coco fiber and some moss today could it just be a little dusty in the cage? And he seems to be laying in the cold side more than the hot side now as well, my temp is at about 83 with 60% humidity. He also seems a little less active as iv been keeping an eye on him right now at night he is laying under his cold hide, Any ideas what this could be??