If he were a person, of course, he would have the right to be whatever body shape he chose. But he's a gerbil, I am his carer, and I say he's a chub bucket.
So when I cleaned the cages out on Monday I cut down his food supply and removed all the sunflower seeds before giving it to him.
You should have seen the filthy look he gave me when his diminished food bowl hove into view.
Yesterday I came home to find him running frantically in his wheel, which he's neglected in recent weeks. I'm convinced the little brute has twigged in his tiny rodent braincase that if he sheds a few grammes, sunflower seeds will reappear on his menu.
If he's capable of this much logical reasoning, who knows what he'll figure out next?