Sam Tsang's discussion on the "chinchilla roll" spurred this. I don't think I've ever come across a mention of this with other corgi owners, but my boy, Spider, has a habit of eating his fill of dog kibble (usually an almost perfectly measured quarter, half or three-quarters of the bowl), then walking over to the carpet near the couch and rolling around while making pig-like snuffling sounds and licking his lips as if it was so good, he just has to have a good roll.
Sometimes, it's just a wiggle on the rug with the noises, sometimes it's all-out rolling from one side to another with a shimmy on his back inbetween. He never seems uncomfortable or in distress, just... satisfied and happy.
Anyone else's corgi do this?