Here's a photo of when we first found him. His head and his paws were huge compared to the rest of his emaciated form.
Here he is now. He's not fat at all (I keep checking him for excess weight, and it's simply not there--you can feel all his ribs prominently), but he's gotten burly and barrel-chested as he's grown into adulthood. Sturdy, you might say. He weighs 44 pounds, and that's with one leg missing!