Rusty’s been your faithful companion for many years, and he never seemed to show any signs of getting older…until this past winter, that is. One morning, you looked at him and noticed that he had dropped some weight, and that he didn’t demonstrate his usual enthusiasm for his breakfast. What grain he did sample, he tended to dribble out of the corners of his mouth, largely unchewed. Gradually, hay began to present a problem as well, and your old friend struggled to grind the fibrous forage. Although otherwise he seemed fine–he wasn’t lame, didn’t run a fever or look depressed, and greeted you with the same calm equanimity he’d always shown–his weight loss started to concern you. How could you help your 20-something equine get more value from his food and regain his former round physique?