I let him out of his aquarium to walk around my living room because I think it is good for him to have exercise on "land." He has always had a habit of going under my couch and tooling around under there because it is dark and tight and he feels safe.
Since it's a sleeper sofa it has a bunch of metal gidgets under there to make the bed pop out. Tank has a habit of going to the edge of one of them (it's pretty dull, so don't worry), and rubbing his back on it for like 20 minutes at a time.
I've checked to make sure he's not stuck under there or struggling or anything, and he's not. If I move him away from the scratchy sofa thingy, he goes right back to it and starts rubbing.
Is he trying to shed or something?
There's nothing really to rub on in his habitat because everything is pretty much smooth.
I've just finished this note and he's STILL under the couch rubbing.
Also, he has not shed in several months. He about a year and five months old now. His behavior, diet, habitat, and health are all great. He shedded scutes constantly up until the time of his first birthday, but now he has stopped. His skin does not shed much either anymore.
Shell pictures:




