Rem and I went for a brisk walk out to the local gopher field. Good that he was brisk. Much more interested in hunting gophers than in eating grass, so he's for sure feeling better than last week. Monitored and dug at a couple of gopher holes for a while.
I've been trying to figure out how to get some fiber down him, since he seems to want to eat only meat and the, um, end results are a little iffy. Slathered half of a whole-wheat English muffin with peanut butter, and he had no qualms about eating every piece I offered him. Still not jumping up and down with excitement about the food, but at least he didn't stop and think and sniff, let alone reject it outright.
I haven't tried plain pumpkin yet, mostly because he's rejected babyfood with veggies in it so I don't have high hopes. But maybe I'll try it. If I have to toss a can that he refuses, well, pumpkin is cheap. And it composts nicely.