Once your cat reaches about 11 years old, the way you feed her should shift. Aging cats often eat less, lose muscle, and develop health issues like kidney disease or arthritis that change what their bodies need. The short version: most senior cats do well on a moderate-to-high protein diet split into two or three small meals a day, with calorie amounts adjusted to body condition rather than a fixed cup measurement. The right amount depends on your individual cat, so let’s walk through how to get it right.
Quick Answer
A typical senior cat weighing 8–10 lbs needs roughly 180–250 calories per day, though this varies widely. Feed easily digestible, protein-rich food in two to three meals. Watch body condition closely, because both unwanted weight loss and creeping obesity are common in older cats. Always loop in your veterinarian before changing the diet of a senior cat that is underweight, overweight, sick, or showing new symptoms, since seniors frequently have hidden conditions that affect feeding.
Not sure how many calories your cat needs? Use our Cat Food Calculator to get a personalized daily estimate based on weight, activity, and body condition.
Senior Cat Feeding Chart and Practical Examples
These figures are starting points for healthy, neutered senior cats at an ideal weight. They are not prescriptions, and a cat with kidney disease, hyperthyroidism, or diabetes may need something very different.
| Cat Weight | Approx. Daily Calories | Wet Food (3 oz can, ~90 kcal) | Dry Food (~350 kcal/cup) |
|---|---|---|---|
| 6 lbs | 140–180 kcal | ~2 cans | ~1/2 cup |
| 8 lbs | 170–220 kcal | ~2–2.5 cans | ~1/2–2/3 cup |
| 10 lbs | 200–250 kcal | ~2.5–3 cans | ~2/3 cup |
| 12 lbs | 230–280 kcal | ~3 cans | ~3/4 cup |
A real-world example: Misty is a 13-year-old spayed indoor cat at a healthy 9 lbs. Her vet estimates she needs about 210 calories. Her owner feeds two 3-oz cans of senior wet food (around 180 kcal) plus a small scoop of dry kibble (roughly 30 kcal) split between morning and evening. That arrangement keeps her weight steady and gives her the moisture she needs.
If your cat is on the lean side or losing weight unexpectedly, do not simply pile on extra food and assume the problem is solved. Weight loss in older cats is one of the earliest signs of disease, and it deserves a vet visit.
Calories Matter More Than Cups
The single most useful habit you can build is thinking in calories, not scoops. Two foods can look identical in the bowl yet differ by 100 calories per serving. Senior cat diets in particular range from low-calorie weight-management formulas to dense, high-energy recovery diets meant for cats that are wasting away.
Check the kilocalorie (kcal) statement on the label, usually listed as “kcal per cup” or “kcal per can.” Then match that to your cat’s daily target. This matters more in senior cats because their metabolism is unpredictable: some older cats become less efficient at digesting food and actually need more calories, while sedentary, arthritic cats burn far fewer. For a deeper breakdown of measuring portions, see our guide on how much food you should feed your cat.
Wet Food Guidance
Wet food earns a special place in senior nutrition. Many older cats become chronically dehydrated, especially those with early kidney changes, and canned food is roughly 70–80% water. That extra moisture supports kidney function and urinary health without your cat needing to drink more.
Wet food is also softer, which helps cats with dental disease or missing teeth, and it tends to be more aromatic, which matters when a senior’s sense of smell fades and her appetite drops with it. Warming the food slightly to body temperature can revive interest in a finicky eater.
For most senior cats, building the diet around wet food is a smart default. If you’re weighing the options, our comparison on whether wet food is better for cats covers the trade-offs, and our wet food feeding amounts guide gives more detailed portions.
Dry Food Guidance
Dry kibble isn’t off the table for seniors. It’s convenient, affordable, and easy to leave out for cats that nibble throughout the day. Some dental-formula kibbles are even shaped to help reduce tartar.
The catch is moisture. A senior cat eating only dry food needs reliable access to fresh water, and ideally a water fountain or several bowls placed around the home, since older cats may not travel far to drink. Dry food is also calorie-dense, so it’s easy to overfeed when free-feeding. If your senior cat suddenly refuses kibble, don’t dismiss it; that can signal mouth pain or illness, a topic we cover in why your cat may not be eating dry food. For portioning help, see how much dry food to feed a cat.
Mixed Feeding Guidance
Combining wet and dry food is what many owners land on, and it works well for seniors. You get the hydration and palatability of canned food alongside the convenience and dental benefit of kibble.
The key is to count both toward a single daily calorie total rather than feeding a full portion of each. A common approach: serve wet food at scheduled meals and leave a small measured amount of dry food for grazing. Just measure that kibble; “a handful” can quietly double your cat’s intake. If you’re deciding how to structure meals overall, compare free feeding versus scheduled feeding.
Factors That Change Feeding Amounts
No chart fits every cat, because calorie needs swing dramatically based on individual factors:
- Body condition. A cat carrying extra weight needs fewer calories; a thin cat may need more, alongside a vet workup.
- Age within the senior range. A spry 11-year-old differs from a frail 18-year-old.
- Neuter status. Spayed and neutered cats burn fewer calories than intact cats.
- Activity level. An arthritic cat that sleeps 20 hours a day needs less than an active senior.
- Pregnancy or nursing. Rare in seniors but possible in unspayed cats, and it dramatically raises needs.
- Medical conditions. Kidney disease, hyperthyroidism, diabetes, and cancer each change the math, sometimes requiring prescription diets.
This is why a calculator gives a starting estimate and your vet gives the final answer. The same is true at the other end of life; our kitten feeding chart by age shows how needs shift across a cat’s whole lifespan.
Signs You May Be Feeding Too Much
- A belly that hangs low and a waist you can no longer feel
- Difficulty grooming the back half of the body
- Reluctance to jump or climb
- Steady weight gain on the scale
- Begging or pacing that you “solve” with more food
Obesity strains aging joints, worsens arthritis, and raises diabetes risk. If your cat seems endlessly hungry, the cause might be behavioral or medical rather than a true calorie deficit; our article on why your cat is always hungry explores the reasons.
Signs You May Be Feeding Too Little
- Visible spine, ribs, and hip bones
- Loss of muscle along the back and hind legs
- Low energy and a dull coat
- Eating eagerly but still losing weight
That last point is critical. A senior cat who eats well yet keeps dropping weight is showing a classic warning sign of hyperthyroidism, diabetes, or kidney disease. More food alone won’t fix it. This warrants a veterinary exam, not just a bigger portion.
When to Ask a Vet
Senior cats hide illness well, so professional input is more important now than at any earlier life stage. Reach out to your veterinarian before making major diet changes, and especially if your cat is underweight, overweight, sick, pregnant, or showing any new symptoms.
Specific red flags that justify a call:
- Sudden weight loss or gain over a few weeks
- Increased thirst or urination
- Vomiting, diarrhea, or constipation that lasts more than a day or two
- Refusing food for more than 24 hours
- Bad breath, drooling, or pawing at the mouth
- New lethargy or hiding
Older cats benefit from twice-yearly checkups with bloodwork, which often catch problems before symptoms appear. If your vet recommends a diet switch, do it gradually using our guide on how to transition cat food safely to avoid stomach upset.
FAQ
How often should I feed a senior cat?
Two to three small meals daily suits most older cats, since smaller portions are easier to digest and keep energy stable. Some cats with medical conditions need more frequent meals. See how often to feed a cat for more.
Should senior cats eat special “senior” food?
Not always. “Senior” labels aren’t tightly regulated, and a healthy older cat may do fine on a quality adult formula. What matters is digestibility, adequate protein, and matching the food to any medical needs. Ask your vet whether a senior or therapeutic diet fits your cat.
Do older cats need more or less protein?
Healthy seniors generally benefit from ample, high-quality protein to preserve muscle, which they lose with age. Our high protein cat food guide explains this. Cats with advanced kidney disease are an exception and may need controlled protein under veterinary guidance, so never restrict protein on your own.
Can I give my senior cat human food as treats?
Small amounts of safe, plain foods can work, but treats should stay under about 10% of daily calories. Cooked chicken is a common safe option, while foods like bacon are too salty and fatty. Always check before sharing.
My senior cat suddenly won’t eat. What do I do?
Treat a sustained loss of appetite as urgent. Cats that stop eating risk a serious liver condition within a few days. Try warming food and offering strong-smelling options, but if she refuses for 24 hours, call your vet.
Is wet or dry food better for older cats?
Wet food’s moisture content gives it an edge for hydration and kidney support, but the best choice depends on your cat’s teeth, preferences, and health. Many owners do both. Compare them in wet vs dry cat food.
Why is my senior cat losing weight even though she eats normally?
This is a hallmark of several common senior diseases, including hyperthyroidism and diabetes. It almost always warrants bloodwork rather than just feeding more.
How do I help an arthritic cat eat comfortably?
Raise the food and water bowls slightly so she doesn’t have to crouch, and place dishes where she won’t need to climb or jump to reach them.
Conclusion
Feeding a senior cat well comes down to a few habits: think in calories rather than cups, lean toward moisture-rich food when you can, split meals into smaller portions, and watch your cat’s body and weight more closely than ever. The right amount is the one that keeps her at a steady, healthy condition, not a number copied from a bag.
Older cats reward attentive feeding with comfortable, active years, but they also hide problems behind a normal-looking appetite. Pair your daily observations with regular veterinary checkups, and bring any sudden change in eating or weight to your vet promptly. When you’re ready to dial in portions, the Cat Food Calculator gives a solid starting point you can fine-tune with your veterinarian’s help.