Should senior dogs eat less?

Yes — usually 10–20% fewer calories, with more protein per calorie. Here is the reasoning behind that answer, and the exceptions worth knowing.

The short answer

Yes — usually 10–20% fewer calories, with more protein per calorie.

Metabolism slows while protein needs stay high to protect muscle. Look for 25%+ protein with lower fat, and monitor body condition monthly rather than yearly.

Why it works that way

Feeding decisions compound: a 10% overshoot becomes 2–3 kg a year, and joint disease follows weight rather than age. That is why portion control and body condition scoring outrank brand loyalty in every credible feeding guideline.

• Weigh food rather than scooping by eye for at least two weeks.
• Score body condition monthly using ribs, waist and belly tuck.
• Change one variable at a time so you can tell what worked.

When to ask your vet instead

See a vet rather than adjusting diet if you notice weight loss without diet change, persistent loose stools, vomiting, or a sudden refusal to eat. Those are clinical signs, not feeding problems.

Adjust slowly, measure consistently, and let body condition be the referee.