Feeding Your Senior Dog
What food should you choose for an elderly dog? Senior food guide 2026
Dietitian considerations for selecting senior food: protein, calories, phosphorus, joint-protective ingredients, and when to switch.
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What food should you choose for an elderly dog?
One of the most common questions I receive is: “Should I switch to senior food just because my dog is over 7 years old?” My answer is: it’s not age, but the dog’s condition that matters. There are 9-year-old dogs for whom adult food is perfect, and there are 6-year-olds who should already consider a change.
When is a dog considered elderly?
- Small breed: from about 10 years old
- Medium breed: from about 8 years old
- Large and giant breeds: from as early as 6–7 years old
What should I look for on the label?
1. Protein: not less, but of better quality It’s an old myth that elderly dogs need less protein. With healthy kidneys, the opposite is true: to maintain muscle mass, high-quality, easily digestible protein is required (around 25–30% in dry matter).
2. Calories: adjusted to activity level Less active elderly dogs tend to gain weight. If the dog’s weight increases, I look for a food with lower energy density (around 330–360 kcal/100 g).
3. Phosphorus: moderate This is crucial in cases of kidney disease, but at this point, a veterinary diet food is necessary, not store-bought senior food.
4. Joint-protective ingredients Omega-3 fatty acids (EPA, DHA from fish oil), glucosamine, chondroitin. Omega-3 is the most well-supported, while the others often have quantities that are too low to have a significant effect.
5. Antioxidants and MCT oil They show promising results in slowing cognitive decline.
Practical example
An 11-year-old dachshund, Lili, gained 1.5 kg over two years on her adult food, which is significant for her size. We didn’t just change her food: we calculated her new daily caloric needs, switched to a lower energy density, high-protein food, and added fish oil. Within six months, she regained her ideal weight, and her owner reported that she was eager to walk again.
How to switch?
Over 7–10 days, gradually:
- Days 1–3: 25% new food
- Days 4–6: 50%
- Days 7–9: 75%
- From day 10: 100%
When should you see a vet sooner?
If your dog is drinking a lot, losing weight, vomiting, or has a change in appetite, a blood test is needed first, and only then should you consider changing food.
How can we help?
On DogDietLab, you provide your elderly dog’s details, health status, and current food, and we create a personalised diet report: we recommend daily calories, portion sizes, and the type of food suitable for your dog’s condition, so you don’t have to navigate the shelves.
This information is for informational purposes only and does not replace veterinary examination.
Free tool — no sign-up
Enter weight, age and body shape: 30 seconds and you get the daily portion.
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