Food for Senior Cats: How Nutrition Needs Change With Age
What changes in an older cat's diet, why weight and water matter, and why therapeutic diets belong with your veterinarian.
There is no single “best” food for every senior cat. Older cats need a complete and balanced food they will eat consistently, enough calories to keep a healthy weight and muscle, and plenty of water. Changes in appetite, weight or thirst are common signs of age-related disease, so regular vet checks matter more than the word “senior” on a bag. Special kidney or other therapeutic diets should only be started on your veterinarian’s advice.
When is a cat a senior?
The 2021 AAHA/AAFP Feline Life Stage Guidelines describe cats aged about 7 to 10 years as mature adults and cats over 10 as seniors, with an end-of-life stage that can come at any age. The guidelines emphasize regular screening for age-related conditions in mature and senior cats. Ask your vet how often your older cat should be seen; many recommend visits more often than once a year for seniors.
How nutrition needs can change
| Change | What it can mean for feeding |
|---|---|
| Lower activity in mature adults | Some cats gain weight and need smaller portions |
| Weight and muscle loss in older seniors | Some cats need more calories or a more palatable food; weight loss always needs a vet check |
| Dental disease | Sore mouths can make kibble hard to eat; softer food may help, but the cause needs treatment |
| Arthritis | Bowls may need to be easier to reach (no jumping, low sides) |
| Reduced sense of smell | Slightly warmed wet food may be more appealing |
| Kidney, thyroid or other diseases | May require a vet-prescribed diet |
About “senior” cat foods
US pet food rules have nutrient profiles for growth and reproduction and for adult maintenance, but no separate official profile for senior cats. That means “senior” foods vary a lot in calories, protein, phosphorus and other nutrients. Check that the food is labeled complete and balanced for adult maintenance or all life stages, and compare calories per can or cup. See how to read a pet food label.
A senior formula is not automatically better for an individual cat. If your older cat is healthy, eats well and holds a steady weight on their current food, your vet may recommend keeping it.
Kidney health and therapeutic diets
Chronic kidney disease (CKD) is common in older cats. The Cornell Feline Health Center notes that age is the main known risk factor and that early CKD often has no obvious signs, which is why screening blood and urine tests are useful for senior cats.
If your cat is diagnosed with CKD, your vet may prescribe a therapeutic kidney diet. Cornell explains that these diets are typically restricted in protein, phosphorus and sodium and are adjusted in other nutrients, and that some studies suggest they can help cats with CKD live longer and better. Important points:
- Only use a kidney diet if your vet recommends it. Restricting protein in a healthy senior cat can contribute to muscle loss.
- Switch gradually and make sure your cat keeps eating. Cats that refuse food can quickly develop serious problems.
- Don’t try to make a “kidney diet” at home or add supplements without your vet’s guidance.
Water and hydration
Good hydration is especially important for older cats. Ways to help:
- offer wet food for some or all meals; canned food is at least 75% water;
- place several water bowls around the house, away from the litter box;
- try wide, shallow bowls or a pet water fountain;
- keep water fresh and bowls clean.
For the trade-offs between formats, see wet vs dry cat food.
Practical feeding tips for older cats
- Weigh your cat regularly, for example monthly, using a baby scale or by weighing yourself with and without the cat. Write it down.
- Feed measured meals so you notice changes in appetite quickly.
- Make food easy to reach: put bowls on the floor or a low step, use shallow dishes, and avoid making an arthritic cat jump.
- Offer small, frequent meals if your cat eats less at a time.
- Warm wet food slightly (to about body temperature, never hot) to boost aroma.
- Change foods gradually over a week or more; older cats can be reluctant to accept new foods.
- Keep treats small, under about 10% of daily calories.
More on day-to-day comfort is in our guide to senior cat care.
Warning signs: call your vet
Contact your veterinarian if your older cat has:
- weight loss, even with a good or increased appetite;
- drinking or urinating more than usual;
- a smaller appetite, or dropping food while eating;
- vomiting more than occasionally, or diarrhea;
- bad breath, drooling or pawing at the mouth;
- less grooming, hiding or reduced activity.
Get prompt care if your cat stops eating for a day or more, has repeated vomiting, seems weak or wobbly, or has trouble breathing. Older cats often hide discomfort; see signs your cat is in pain.
Bottom line
Feed your senior cat a complete and balanced food they enjoy, track their weight, keep water easy to get, and see your vet regularly. Kidney and other therapeutic diets are valuable tools, but they should be chosen by your veterinarian based on test results.
FAQ
Should I switch my cat to senior food at age 7?
Not automatically. If your cat is healthy and holding a steady weight, ask your vet whether a change makes sense.
Can I give my older cat a kidney diet to prevent kidney disease?
No. Kidney diets are designed for cats with diagnosed disease. Ask your vet about screening tests instead.
My senior cat is eating more but losing weight. Why?
That combination can have several medical causes and needs a vet visit. Don’t try to fix it by feeding more.
Is dry food OK for older cats?
It can be, if your cat eats it comfortably and drinks enough. Many older cats benefit from some wet food for extra water.