Most of the time since then he looked something like this:
And this June he managed to fool everyone and look like this for a few seconds:
Mid-July he went off his food a bit. By the end of July he simply wasn't eating anything but smidgens of scraps of chicken and steak, and was losing weight. In the second week in August I had him in for an ultrasound which was inconclusive, and then a CAT scan which spelled out "Lymphoma". My vet pushed the plunger for me on 8/16.
I sure didn't expect to have to deal with all that again so soon. I know every dog is the best dog ever, but Sam was the best dog ever.
Once again, as with Joe the Cat, thanks to everyone who's helped me with Sam over the years.