Feeding Your Senior Dog
When to Change Your Senior Dog's Diet
Learn when to adjust your senior dog's diet based on breed, size, and key signs of aging. Keep them healthy and happy.
1 min readReviewed: Oct 20, 2025
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How much food does your dog need per day?
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When to Change Your Senior Dog's Diet
When Dogs Become Seniors (by Size)
| Size | Age (Years) |
|---|---|
| Mini / Toy | 10–11 |
| Small / Medium | 8–9 |
| Large | 6–7 |
| Giant | 5–6 |
Key Indicators
- Slower movement, stiffness
- Decreased appetite
- Muscle mass loss
- Dental issues
- Changes in bowel habits
Choosing Senior Dog Food
- Reduced calories
- Increased protein content
- Joint-supporting ingredients
- Easily digestible
Free tool — no sign-up
How much food does your dog need per day?
Enter weight and activity level — 10 seconds and you get the daily portion.
References
- 1.Laflamme DP — Nutrition for aging cats and dogs and the importance of body condition. Veterinary Clinics of North America: Small Animal Practice 35(3):713–742, 2005. https://doi.org/10.1016/j.cvsm.2004.12.011 (accessed: 2026-09-10)
- 2.Cline MG, Burns KM, Coe JB, et al. — 2021 AAHA Nutrition and Weight Management Guidelines for Dogs and Cats. Journal of the American Animal Hospital Association 57(4):153–178, 2021. https://doi.org/10.5326/JAAHA-MS-7232 (accessed: 2026-09-10)
- 3.WSAVA Global Nutrition Committee — WSAVA Global Nutrition Guidelines. World Small Animal Veterinary Association, 2021. https://wsava.org/global-guidelines/global-nutrition-guidelines/ (accessed: 2026-09-10)
This is general information and does not replace a veterinary diagnosis.
This guide was compiled based on the expert input of Reka Fazekas-Birizdo canine nutritionist.
Certified Canine Nutritionist
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