Heard from the vet today. King's thyroid is normal; in fact, all his numbers were, in the vet's words, "really, really good." A good thing to hear about your 9 year old puppy.
His cholesterol was a little high last year--I didn't even realize that they tracked that for dogs--but it's fallen back down to normal. Given that he's gained several pounds over that time, I find it interesting.
Anyway. I need to cut back on his food a little. No more canned food topper on his dry food, since vet said canned foods can be higher in fat. I may sneak in a tablespoon every so often, just as a treat. Poor King. He already washes the floor with his tongue in his never-ending search for crumbs. Now he may just try to eat the floor.