Thanks for all the great food suggestions! I've found Miller likes just about anything that contains rice and meat. However, he actually ate a bowl of dog food today. I wasn't even going to try to feed him any for a few more days, but DD just brought it into him after she fed the rest of the animals. He scarfed it down after eating 3 cups of rice and sausage, so I think it's safe to say his appetite is back.
He's getting more energy, although he's still unsteady when he walks. He almost ran away from me today when I took him out for a bathroom walk. I can tell he's already itching to do a parameter check, but given how bad coyotes are right now, that is definitely not happening for a few more weeks - at least not unsupervised. He is starting to go stir crazy (between moments of complete exhaustion), and unfortunately we're getting another ice storm even as I type this, so he's not going to get as much outside time as I'm sure he wants the next few days.
On the upside, it has been so neat to see Clyde with him the last few days. Clyde has to be outside with the goats 24/7 while Miller is recovering, and I think he gets a little jealous sometimes, but in spite of that, he is so sweet with Miller. He comes running over excited with tail wagging every time he sees Miller come out of the house, he nuzzles him, he watches over him whenever he goes outside for walks and potty breaks, and he always waits for Miller if Miller is tired and has to slow down. Miller tries to act tough and occasionally growls at Clyde to assert his position as alpha, but it's clear he misses him, and he pouts a little every time he has to come back inside. So sweet!
