Today me and my little guy were watching tv and he opened his mouth like he was yawning. About ten minutes later he did it again and then when I put him back in his cage he did it as soon as he curled up and got comfy. Is this just a normal yawn? Or should I be concerned? He is acting normal, eating, drinking, hiding out. I do think he will be shedding soon his eyes were bluish and now they cleared back up.