What to Feed a Senior Dog: Nutrition for Older Dogs
As dogs age, their bodies change. Metabolism slows, muscle declines, teeth and joints wear and organs age. Nutrition can support healthy aging, but there is no one senior diet for every dog.
When is a dog senior?
Giant breeds may be seniors at around five or six, while small breeds may not be seniors until ten or older. Look at your individual dog, not just the calendar.
Calories and weight
Many older dogs are less active and have slower metabolism, so they can gain weight easily. Obesity worsens arthritis and other conditions. See our guide to dog obesity. Some seniors, however, lose weight due to disease, dental pain or reduced appetite. Weigh your dog regularly, check body condition and adjust portions. See our body condition score chart.
Protein
Older dogs lose muscle with age, so they need high-quality, digestible protein. Restricting protein in healthy seniors is not recommended. Dogs with kidney disease may need a different approach. See how much protein dogs need and diet for dogs with kidney disease.
Joint support
Arthritis is common in older dogs. Weight control is the most effective dietary measure. Omega-3 fatty acids from fish oil and some joint supplements may help. See our guides to fish oil, glucosamine and arthritis in dogs.
Dental health and eating
Painful teeth can make dogs reluctant to eat. Softer food, moistened kibble or wet food may help, but dental treatment is the real solution. See our guide to dental disease.
Digestive changes
Older dogs may become constipated or have loose stools. Adjusting fibre, adding probiotics under veterinary advice and ensuring adequate water may help. See probiotics for dogs.
Cognitive health
Some senior diets contain antioxidants, medium-chain triglycerides and other ingredients that may support brain health. Evidence varies. Mental stimulation, exercise and routine also matter.
Choosing a senior food
- Complete and balanced for adult maintenance or all life stages
- Appropriate calories
- Digestible, quality protein
- Good palatability
- Made by a reputable company
Not all senior-labeled foods are different from adult foods. Compare labels and ask your vet.
Medical conditions
Kidney disease, heart disease, diabetes and others may require prescription diets. Do not self-prescribe. See our guide to feeding a dog with pancreatitis for an example.
Feeding tips
- Offer smaller, more frequent meals if appetite is low.
- Warm food slightly to boost aroma.
- Raise bowls for dogs with neck or joint pain.
- Provide fresh water at all times.
- Maintain regular routines.
Checkups
Biannual vet visits with bloodwork can catch problems early. Discuss diet at each.
Water and hydration
Older dogs may drink more or less than before, both of which can signal illness. Offer fresh water in several spots, and consider wet food or adding water to kibble if your dog drinks little. Sudden increases in thirst can be an early sign of kidney disease, diabetes or other conditions, so mention it to your vet promptly.
Making mealtimes easier
Arthritic dogs may find bending to a low bowl uncomfortable, so a raised bowl or a non-slip mat can help. Dogs with poor eyesight or cognitive changes appreciate consistent bowl placement and calm routines. Offer food in a quiet area, and be patient if your dog eats slowly.
The takeaway
Feed seniors for their individual needs: keep weight healthy, support muscle and joints and treat medical conditions with veterinary guidance.
Frequently asked questions
When is a dog considered senior?
Roughly seven years for many breeds, earlier for giant breeds and later for small breeds.
Do senior dogs need less protein?
Healthy seniors usually need as much protein as adults, unless a vet advises otherwise for disease.
What if my senior dog stops eating?
Loss of appetite can signal illness or dental pain, so see your vet.
Should senior dogs have joint supplements?
Some benefit, but ask your vet about options and evidence.
This article is general educational information, not veterinary advice. Every dog is different. If your dog is unwell, or you are unsure about a symptom, diet change or medication, contact your veterinarian.