He is eating a lot more beef heart, almost daily, and gaining weight whilst requiring less food and less exercise. He is down to about a pound a day, from 1.4-1.8 on average. And he only goes on a short, 45-minute-ish walk about 5 times a week. Days that he doesn't walk, we play in the yard or I take him to run with his pooch friends. We do training on almost every walk we go on. That is, I take a clicker and my treat pouch and click him for things like being by me [but not looking at me for treats], or walking calmly with the leash loose, or stopping at corners, etc etc.
He is also needing a lot less bone in his diet. Which is great, just wonderful, really.