This guide is educational and does not replace advice from your veterinarian, who can recommend a diet for your dog’s health.
Around seven years old for many dogs, a bit sooner for giant breeds and later for small ones, the body starts to change. Metabolism slows, muscle thins, teeth get sensitive and joints complain. Feeding the same bowl you fed at age three can quietly lead to weight gain in some dogs and muscle loss in others. A few smart adjustments can help your dog stay lean, strong and comfortable. Not sure whether your dog counts as senior yet? See when a dog is considered senior.
What changes in an older dog’s nutrition needs
| Change with age | What it means for feeding |
|---|---|
| Slower metabolism, less activity | Many seniors need fewer calories, so portions may need trimming |
| Loss of lean muscle (sarcopenia) | Quality protein matters. Do not cut protein unless your vet says so |
| Joint wear and arthritis | A lean body weight eases pressure. Ask about omega-3 fatty acids |
| Dental disease or sore mouth | Softer food or smaller kibble may be needed |
| Reduced smell, taste, appetite | Warm food, flavourful toppers, smaller frequent meals |
| Digestive and organ changes | Hydration, gentle fibre, vet-guided diets for kidney, heart or other diseases |
The “low protein for seniors” myth
You may have heard that older dogs should eat less protein to protect the kidneys. For healthy senior dogs, that is generally not supported: they often need as much, and sometimes more, high-quality protein to keep muscle. Protein restriction is a treatment for specific diagnosed conditions such as advanced kidney disease, and it should be guided by your vet. Check bloodwork at your regular senior check-ups so any change is caught early.
How to choose a senior dog food
- Check the adequacy statement. It should say the food is complete and balanced for adult maintenance or all life stages. There is no official “senior” nutrient profile, so the label alone does not guarantee a good food.
- Look at the calories (kcal per cup or kg). This tells you how much to feed more than the bag name does.
- Prefer a named protein source near the top of the ingredient list, from a company that employs qualified nutritionists and does feeding trials.
- Match your dog’s needs. Overweight? Choose a weight-management formula. Thin or losing muscle? Ask your vet about a higher-calorie, higher-protein food.
- Consider texture. Smaller kibble, soaked kibble, wet food or a mix can help with dental pain.
- Read the label carefully. Our guide on how to read a dog food label explains what to look for, and wet vs dry dog food weighs up the formats.
Nutrients that may help (always ask your vet first)
| Nutrient | Why it is used | Notes |
|---|---|---|
| Omega-3 (EPA and DHA) | Supports joints and skin; may help inflammation | Use a vet-recommended source and dose |
| Glucosamine and chondroitin | Popular for joint health | Evidence is mixed. It may help some dogs, so discuss with your vet |
| Antioxidants and MCTs | Found in some diets aimed at brain ageing | See dog dementia signs and care |
| Fibre | Digestive regularity | Too much can reduce nutrient absorption. Keep it moderate |
Practical feeding tips for older dogs
- Weigh monthly. Gradual changes are easy to miss. Aim for ribs you can feel with a light covering, and a visible waist.
- Split meals. Two or three small meals are gentler than one big one.
- Warm and soften. Add warm water to kibble, or a spoonful of wet food, to boost aroma. Avoid onion and garlic in toppers or broths.
- Fresh water everywhere. Place bowls on each level of the house so a stiff dog does not have to walk far.
- Raise or lower bowls only if it helps. If your dog struggles to bend, a slightly raised bowl may be more comfortable, but ask your vet first for deep-chested breeds.
- Change foods gradually over 7 to 10 days.
- Keep treats small and under about 10% of daily calories.
- Brush teeth and check the mouth. See our dental care guide.
Weight goals at a glance
| Your senior dog is… | What to do |
|---|---|
| Overweight | Measure food, cut treats, add gentle exercise. Weight loss often eases arthritis. See arthritis signs and comfort tips |
| Ideal | Keep portions steady and re-check monthly |
| Losing weight or muscle | See your vet. This can signal dental, kidney, thyroid or other illness |
When to call the vet about eating
- Not eating for more than 24 hours, or a big drop in appetite.
- Unexplained weight loss or gain.
- Drinking or urinating much more than usual.
- Vomiting or diarrhea (dog vomiting guide).
- Dropping food, drooling, pawing at the mouth or bad breath.
🧠Quick Quiz: Senior Dog Nutrition
Tap a question to reveal the answer.
Q1. Do healthy senior dogs generally need low-protein food?
Answer: No. They often need good-quality protein to keep muscle. Restriction is only for specific diagnosed conditions.
Q2. How often should you weigh a senior dog?
Answer: About once a month, so gradual changes are not missed.
Q3. When should a loss of appetite worry you?
Answer: If your dog goes more than about 24 hours without eating, or loses weight, call your vet.
- Do not cut protein unless your vet recommends it.
- Control calories and weigh monthly.
- Judge food by adequacy statement and results, not the word “senior”.
- Disease needs a vet-guided diet.
Senior dog diet FAQ
Do older dogs need senior dog food?
Not always. Some do well on a good adult food, while others benefit from a senior or weight-management formula. Choose based on body condition, health and your vet’s advice.
How much should I feed a senior dog?
It depends on weight, activity and the food’s calories. Start with the bag guidance, then adjust by body condition. Our portion guide can help.
Why is my old dog suddenly picky?
Dental pain, nausea, reduced smell or illness can all be causes. If it lasts more than a day or two, ask your vet.
Is wet food better for older dogs?
It can help dogs with dental problems or poor appetite and adds water. A mix of wet and dry works for many.
Should I give my senior dog joint supplements?
They may help some dogs, but quality varies. Discuss products and doses with your vet first.
Can senior dogs eat human food?
Some foods are fine in small amounts, but others are toxic. See our safe and toxic foods list.
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