Well that's exactly it, I can't really tell. I have no idea when dewlaps start to develop and if they can develop at any age. I can't feel it that well because Bandit won't really let me, at first it just felt like skin, but it does seem to be a tiny bit bigger today though I can't really feel any lumpiness to it, which I'm assuming is good. I figure it's better safe than sorry.
He's perfectly happy and healthy otherwise. I figured it if was something tooth related I'd be seeing a change is his eating by now.