Senior Cat Care Guide: What to Change After Age 11
From 11, a cat needs twice-yearly vet checks, a monthly weigh-in, easier litter trays and more water. Here's the full senior care routine, step by step.
Senior cats rarely announce that anything has changed. They sleep a little more, jump a little less, and eat about the same — and because cats are built to hide weakness, the first real clue is often a number on a scale or a blood test. The good news is that almost everything that goes wrong in old age is slow, findable and manageable, provided somebody is looking.
The Senior Routine in Six Lines
- • Vet check every six months from age 11.
- • Weigh your cat once a month at home.
- • More wet food and more water bowls.
- • A big, low-sided litter tray on every floor.
- • Brush the areas your cat can no longer reach.
- • Keep the routine and the furniture predictable.
Which life stage is your cat in?
Senior care starts at 11, and the advice changes again at 15. Check your cat's human-year age and life stage first.
Open Cat Age CalculatorTwice a Year at the Vet, Not Once
This is the single change that matters most. From 11, the recommendation moves from an annual visit to one every six months. A year is a long time in an old cat's life — roughly four human years — and kidney disease can travel a long way in that window without a single obvious symptom at home.
A proper senior check is more than a quick look over. It should include:
- Weight and body condition, compared against the last visit rather than judged on the day.
- Blood work — kidney values, liver, blood sugar and a thyroid level.
- A urine test. Urine concentration often flags kidney trouble before the blood results do.
- Blood pressure. High blood pressure is common alongside kidney and thyroid disease and can cause sudden blindness.
- A mouth exam, because dental pain is the most under-treated problem in older cats.
Ask for the actual numbers and keep them. A kidney value that is still “normal” but has moved every visit for two years tells you far more than any single result.
The Monthly Weigh-In
Weight is the cheapest diagnostic test you own. A cat can lose a tenth of its body weight and still look completely normal under a thick coat, especially if you see it every day.
Stand on a bathroom scale, note the number, then step on holding your cat and subtract. Do it on the same day each month and write it down. In a 5 kg cat, a loss of 250 g is 5% of body weight and is worth a phone call — not a wait-and-see.
Weight loss is a symptom, not an age. Hyperthyroidism, kidney disease, diabetes, dental pain and intestinal disease all start this way. Every one of them is easier to treat at the start than six months in — our guide to why an old cat loses weight works through the causes one by one.
What Usually Goes Wrong — and What It Looks Like
| Condition | How common | What you would notice |
|---|---|---|
| Chronic kidney disease | Roughly a third of cats over 10 | Drinking and urinating more, weight loss, poor appetite, dull coat |
| Hyperthyroidism | About 10% of cats over 10 | Eating well but losing weight, restless, vocal at night, vomiting |
| Diabetes | Around 1 in 200 cats, more with excess weight | Drinking a lot, urinating a lot, weight loss, weakness in the back legs |
| Dental disease | Most cats over 4 have some degree of it | Bad breath, dropping food, chewing on one side, drooling |
| Arthritis | Signs on X-ray in about 90% of cats over 12 | Stops jumping, sleeps lower down, matted coat, accidents by the tray |
Notice how many of these share the same two signs: drinking more, and losing weight. That overlap is exactly why blood and urine tests matter more than guesswork at home.
Food and Water
Two things change with age. Older cats digest food less efficiently and lose muscle, so they need good-quality protein rather than less of it — protein is restricted only when a vet advises it for a diagnosed condition. And many seniors simply eat less at a sitting, so the same daily amount is easier to manage split into three or four smaller meals.
Water is the other half. A cat needs roughly 50 ml per kilogram of body weight a day, and most of that should come from food rather than the bowl. Cats fed only dry food live on the edge of mild dehydration, which is the last thing ageing kidneys need.
Easy water wins: add a wet meal a day, put bowls in two or three rooms away from the food, use wide shallow bowls so the whiskers stay clear, and top them up rather than refilling once a day. A fountain suits some cats and scares others — try before you commit.
For portions, our cat food calorie calculator gives a daily target, and how much wet food to feed a cat turns that number into tins and pouches.
Stiff Joints Change Everything
Arthritis is the quiet epidemic of old cats. X-ray studies have found signs of it in around 90% of cats over 12, yet it is diagnosed far less often than that — because cats do not limp in front of you. They just stop doing things.
A cat that has given up the windowsill, sleeps on the floor instead of the bed, has a matted patch over the hips, or has started missing the litter tray is telling you that something hurts. Half the fix is furniture:
- A step or stool up to the favourite sofa, bed or window spot.
- A large open tray with one low side, roughly 7–10 cm high, and one on every floor.
- Bowls raised slightly so your cat is not crouching over them.
- Non-slip mats on laminate or tile where the cat lands and turns.
- A warm, draught-free bed at floor level — stiff joints hate cold.
The other half is the vet. There are safe, effective pain treatments for cats now, including a monthly injection for feline arthritis, and most owners are shocked at how much cat comes back once the pain is handled.
Never give a cat human painkillers. Paracetamol (acetaminophen) and ibuprofen are poisonous to cats, and even one tablet can be fatal. Pain relief for cats must be prescribed by a vet. If your cat has already swallowed one, treat it as an emergency and call straight away.
Grooming, Claws and Teeth
Old cats groom less, partly because twisting hurts and partly because they tire sooner. Mats appear first along the spine and hindquarters — the places a stiff cat cannot reach. A few minutes of brushing every couple of days keeps the coat comfortable and gives you a monthly excuse to feel for new lumps.
Claws thicken with age and get worn down less, so they can grow round into the pad. Check them every couple of weeks; a nail curling towards the paw needs trimming before it breaks the skin.
Teeth deserve their own paragraph. A painful mouth changes what a cat eats, how it grooms and how it behaves, and cats almost never show it directly. Bad breath, dropping food, chewing on one side or a red line along the gums all justify a dental exam.
Keep the World Predictable
Ageing cats cope badly with change. Hearing, sight and memory all fade gradually, and a familiar layout is how a senior cat navigates. Keep food, water and trays where they have always been, leave a night light in the hallway, and give a new cat or a new baby a lot more introduction time than you would have a few years ago.
If an older cat starts yowling at night, getting stuck in corners or staring at walls, read our guide to dementia in cats. It is common past 15 — and several very treatable conditions look exactly the same, which is the real reason to get it checked.
A Five-Minute Check Once a Month
Do this on the first of the month with the weigh-in and you will usually spot trouble weeks before it becomes a crisis:
| Check | How | Call the vet if |
|---|---|---|
| Weight | Weigh yourself, then yourself holding the cat, and subtract | Any loss of 5% or more — 250 g in a 5 kg cat |
| Water bowl | Note roughly how often you refill it | Drinking noticeably more than last month |
| Litter tray | Look at the size and number of urine clumps | Bigger or more frequent clumps, or straining |
| Coat | Run your hands along the back and hips | Greasy, matted fur where the cat can no longer reach |
| Mouth | Lift the lip and look at the back teeth and gums | Red gum line, brown tartar, or bad breath |
| Movement | Watch one jump up and one jump down | Hesitating, using furniture as a step, or no longer jumping |
Do not wait for the next check-up if your senior cat stops eating for more than a day, hides away, breathes with its mouth open or faster than usual, strains in the litter tray without producing urine, or suddenly cannot use its back legs. A cat that has not eaten for 48 hours is at risk of liver damage, and a blocked bladder is an emergency within hours.
Quality of Life
At some point the question stops being what else can be treated and becomes whether your cat is still enjoying its days. Vets use simple scales for this, and they mostly come down to a handful of things: eating, drinking, comfort, grooming, mobility, litter tray habits, and whether there are still more good days than bad.
Score it honestly over a week rather than on one bad afternoon, and talk it through with your vet. Cats are good at masking pain, so the people who know them best are usually the last to accept what they are seeing — and there is a lot of comfort care available long before the final decision.
The Bottom Line
Senior cat care is not complicated. Two vet visits a year with blood work, a weigh-in once a month, more wet food and water, a tray your cat can actually climb into, and a bit of brushing where it can no longer reach. Those five habits catch most of what shortens a cat's life — and the earlier they start, the more years they buy. Check where your cat sits right now with the Cat Age Calculator. 🐱
Frequently Asked Questions
How often should a senior cat see the vet?
Twice a year from age 11, instead of the annual visit an adult cat gets. Cats hide illness well, and the three conditions that dominate old age — kidney disease, hyperthyroidism and diabetes — are all far easier to manage when they are caught early. A senior check should include weight, a full physical exam, blood work, a urine test and blood pressure.
What should I feed a senior cat?
A complete food made for senior or mature cats, and more wet food than you fed before. Healthy older cats need plenty of good-quality protein, because they lose muscle with age — protein is only restricted when a vet advises it for a specific condition. Split the same daily amount into more, smaller meals if your cat eats less at one sitting.
Why is my senior cat losing weight?
Weight loss in an older cat is never just old age. The usual causes are hyperthyroidism, kidney disease, diabetes, dental pain and intestinal disease — and all of them need a vet. A cat can look the same to you and still have lost a tenth of its body weight, which is why a monthly weigh-in at home matters so much.
How do I know if my old cat is in pain?
Cats rarely cry out. They show pain by doing less: no longer jumping onto the windowsill, sleeping on the floor instead of the bed, a scruffy coat over the back and hips, missing the litter tray, or growing short-tempered when stroked. X-ray studies have found signs of arthritis in around 90% of cats over 12, so this is common — and treatable.
Do senior cats need a different litter tray?
Usually yes. Older cats with stiff joints struggle to climb into a high-sided or covered tray, and accidents next to the tray are often a mobility problem rather than a behaviour one. Use a large open tray with one low side, put one on every floor of the house, and keep it away from noisy appliances.
At what age is a cat considered senior?
Most vets treat a cat as senior from 11 years, and as geriatric from 15. Many practices start watching for age-related changes from about 7, because that is when the first quiet changes in weight, teeth and kidneys tend to begin.