Senior Dog Nutrition: When to Cut Back
Published May 2026 · 5 min read
My beagle, Biscuit — yes, same Biscuit from the diet food article, he has been through a lot — turned 12 last winter. Still acts like a puppy at 6 AM. Still demands breakfast like he has not eaten in three days. But here is the problem: he sleeps 18 hours now. The other 6 hours are mostly slow walks and staring at squirrels he no longer chases.
His metabolism? Down about 20% from his prime. His appetite? Zero change. If anything, he is more demanding. Like a retired guy who still orders the large breakfast because he always has.
What the Vet Said
"Cut his food by 15% and add glucosamine." That was it. No special senior food needed unless he has kidney issues. Just less of the same good stuff. I was expecting some complicated diet plan. Nope. Simple math.
The tricky part is that senior dogs lose muscle mass naturally. So you cannot just slash calories blindly. Protein becomes even more important. Biscuit now gets 30% protein food instead of 25%. Same calories, more muscle support. He actually looks leaner and more solid than he did at 10.
Signs You Are Overfeeding a Senior
- Weight stays the same but muscle disappears — they get "skinny fat."
- Stiffness increases. Extra weight hurts old joints. Obvious but ignored.
- Bathroom issues. Too much food = too much waste. Senior systems handle it poorly.
One thing that surprised me: senior dogs often do better with two smaller meals instead of one big one. Digestion slows down. Big meals sit heavy. Biscuit gets breakfast at 7 and dinner at 5. Half portions each. He stopped having that post-dinner groaning thing he used to do.
Oh, and water. Seniors dehydrate faster. I added a second water bowl upstairs because Biscuit stopped going downstairs as often. Small change, big difference. He drinks about 30% more now.