not sure if this is the right place to post this. but i just started noticing this yesterday. he's a little over 2 months old. and he starting and finished shedding yesterday, pretty fast too. but it seems like he is inflating his lower half. he wasn't doing it last night while the lights were off and he was sleeping. but i turned them on this morning, walked away, and when i came back he was like that. but as soon as i walked over to the cage for a better look, he went back to normal. any ideas?