Senior Cat Care: What Changes, What to Watch, and How to Help

When Is a Cat “Senior”?

The stages most vets use now come from the 2021 AAHA/AAFP Feline Life Stage Guidelines. There are four: kitten (up to 1 year), young adult (1-6), mature adult (7-10), and senior (10+). Cats over 15 used to have their own “geriatric” stage; the new guidelines fold them into senior, with the same care and more frequent checks.

“One cat year equals seven human years” is too rough. A closer guide: a 12-year-old cat is about like a 64-year-old person, and a 16-year-old cat about 80. Cats age at different speeds, though. Genetics, weight, dental health, and indoor or outdoor life all play a part, so two ten-year-olds can be in very different shape.

What Normal Aging Looks Like, and What Doesn’t

Some changes are just age. Older cats sleep longer and more deeply, play less, and their coat may lose some shine. Hearing and sight fade so slowly that owners often don’t notice. Jumping less and grooming less can be arthritis, though, not simply getting older.

These changes mean a trip to the vet:

• Drinking more
• Unexplained weight loss, or losing weight while eating a lot
• Vomiting more than once or twice a month
• Ongoing constipation or diarrhea
• Breath that smells different
• Loud crying at night that started recently
• Any change in litter box habits

A clear change in eating, drinking, or toileting usually means more than age.

The hard part is how slowly these changes come. Kidney disease doesn’t appear overnight: water intake creeps up over months, weight drops a hundred grams or two at a time, and activity tapers off bit by bit. That’s why older cats benefit so much from a written record you can look back on.

Joint Pain, the Most Overlooked Problem in Older Cats

About 90% of cats over 12 show joint degeneration on X-rays, most often in the elbows, hips, and spine. Far fewer owners realize their cat has joint pain.

Cats rarely limp the way dogs do. Pain shows up in small changes:

• Pausing or hesitating before a jump that used to be effortless
• Taking the stairs more carefully, or starting to use furniture in a different order
• Messier fur over the back, hips, or tail base, spots a cat with sore joints can’t reach
• Increased irritability, especially when handled around the hips or low back
• Sleeping in new lower spots instead of the old high perch
• Litter box accidents from a cat who can’t comfortably step over a high rim

Owners often read these as “she’s just slowing down,” but many of them are pain, and pain can be treated.

If you notice these changes, ask your vet for a pain assessment. There are more pain relief options for feline arthritis than there used to be, including a once-a-month injection made for arthritic cats. Your vet will choose what suits your cat and combine it with changes at home. An older cat doesn’t have to live with joint pain.

For more signs of pain, see our pain detection guide.

The Senior Conditions to Screen For

After 10, these seven conditions deserve particular attention: chronic kidney disease, hyperthyroidism, diabetes, high blood pressure, heart disease, dental disease, and cancer.

Chronic kidney disease (CKD) is one of the most common diagnoses in older cats, affecting roughly 20-50% of cats over 10 and a higher fraction of cats over 15. Early signs are small: drinking and peeing more, slow weight loss, a smaller appetite. It’s diagnosed with bloodwork (creatinine and SDMA) and a urine test, and your vet will explain the stage and what comes next.

Hyperthyroidism affects roughly 10% of cats over 10. The typical picture is a cat eating well, even more than usual, while losing weight, often restless and louder and more demanding. A single T4 blood test screens for it.

Diabetes mellitus is more common in overweight middle-aged-to-senior cats. Excessive thirst and urination overlap with kidney disease, but diabetic cats often eat well and may have unusually large, sticky urine spots in the litter box. Blood and urine tests confirm it. Caught early, many cats can go into remission.

Hypertension in cats is usually secondary to another disease (CKD or hyperthyroidism most often). The first sign is sometimes sudden blindness from retinal detachment. Checking blood pressure at regular visits is how it gets caught before damage is done.

Heart disease is more common in senior cats than most owners realize. Hypertrophic cardiomyopathy (HCM) is the leading form, and prevalence rises to roughly 29% in older cats. Most affected cats look healthy, and a stethoscope often misses it; an echocardiogram is what reliably finds it. It’s worth discussing with your vet for higher-risk breeds (Maine Coon, Ragdoll, British Shorthair, Persian, Bengal, Sphynx, Norwegian Forest, Birman) or any cat with a murmur, a gallop rhythm, or a fainting episode.

Dental disease is very common in older cats. Periodontal disease, tooth resorption, and stomatitis are all painful. Bad breath, dropping food, eating more slowly, or chewing on one side are all signs.

Cancer rates climb in senior cats. Lymphoma, mammary tumors (especially in unspayed females), and squamous cell carcinoma are among the most common. New lumps, unexplained weight loss, or persistent vomiting and diarrhea warrant evaluation.

These conditions often look alike. A senior cat losing weight could have kidney disease, hyperthyroidism, a sore mouth, diabetes, cancer, or simply be absorbing food less well. You can’t tell from the outside, which is why regular bloodwork matters.

How Often to See the Vet

The life stage guidelines recommend an exam at least every six months for cats over 10, with full screening tests at least once a year and ideally at every visit. A workable schedule:

Every six months sounds like a lot, but numbers can change quickly in older cats. The kidney marker SDMA can rise before creatinine does, thyroid T4 can creep up before weight loss shows, and high blood pressure rarely causes symptoms until an organ is damaged. With yearly checks, problems are often found a stage later.

If cost is a constraint, talk to your vet about a tiered approach. A shorter panel (chemistry, T4, urine specific gravity, blood pressure) costs much less than a full workup and still picks up many common problems.

What to Keep Track of at Home

A vet visit shows one day. Changes build up at home. For any cat over 10, these are worth recording over time:

Body weight and body condition. Weighing monthly is enough; a cheap kitchen scale and a small box work for most cats. But weight alone misses muscle loss, because cats can stay the same weight while losing lean tissue and gaining fat. Run your hand along the spine and over the hips. If the spine and pelvic bones feel sharper than they used to, your cat is losing muscle, even if the weight hasn’t changed. Vets use a body condition score (BCS) and a muscle condition score (MCS); at home, watching for change is enough.

Water intake. It’s hard to measure exactly, but changes are easy to spot. If the bowl is emptying faster, if you’re refilling more often, or if your cat is drinking from new places, log it.

Appetite. Note when meals get refused, when leftovers stay in the bowl, or when treats stop interesting your cat. An older cat who suddenly turns picky is worth watching.

Litter box patterns. Bigger urine clumps, more frequent visits, missing the box, or straining are all worth a vet conversation.

Mobility. Hesitation before jumps, slower stairs, new resting spots. Write them down when they start. Time-stamped notes are far more useful than “I think she stopped jumping on the bed a while ago.”

You can keep all of this in Furwise: weight with a chart, water, litter box, and medication logs, notes with photos, and family members can log too. At the vet, open it and the whole history is there.

Adjusting the Home

Small changes go a long way for an older cat. The aim is to clear obstacles from the things they still want to do.

Litter boxes. Switch to a low-entry box if your cat is over 12 or shows any stiffness. High-sided and top-entry boxes are often why a cat with arthritis stops using the box. Increase the count too. The standard rule is one per cat plus one, and senior cats benefit from one on each floor or in each main area.

Resources on every floor. A cat who used to bound up the stairs 20 times a day may now make the trip three times. Put food, water, and a litter box on each level so they don’t have to make the trip. Skipped trips can turn into drinking too little, accidents, and weight loss.

Ramps, steps, and grippy surfaces. A small ramp or step up to a favourite windowsill or couch makes a clear difference, and so do non-slip mats on hardwood or tile by the bowls. If a floor is slippery, an older cat may simply stop going into that room.

Warmth. Older cats feel the cold more. A low-heat pet warming pad, or a thick memory-foam bed in a draft-free spot, will be well used.

Lighting. Cats with declining vision navigate better with a couple of low nightlights along their usual paths to food, water, and the litter box. The goal isn’t bright lighting. It’s enough cue to avoid corners and steps.

Nails. Older cats scratch less, so the old outer layers of the claws don’t shed. Claws get thick and can grow long enough to curl into the paw pad and cause infection. Check all four feet once a month, including the dewclaws, and trim them yourself or have your vet do it.

Quiet time. Older cats cope less well with noise. Regular mealtimes, a quiet room to retreat to, and undisturbed sleep matter much more now than when they were young.

Nutrition for Older Cats

What an older cat should eat depends on the cat. Packaging suggests there’s one “senior food” for every aging cat, but there isn’t.

A few principles apply to most. First, water: older cats dehydrate more easily when they get sick, so wet food, a fountain, and extra water bowls all help. Second, enough good-quality protein, because older cats lose muscle easily. Low-protein diets are for cats with specific conditions, most often later-stage kidney disease. Cutting protein for a healthy senior only speeds up muscle loss.

Some older cats, particularly those over 12 who are losing weight, show reduced fat and protein digestibility. These cats may need food that is higher in calories and easier to digest. Other older cats still put on weight easily and need careful portions. The right diet depends on whether your cat is losing or gaining.

If your cat is losing weight, don’t switch foods first; have blood tests done. Weight loss usually has a cause, and the diet should follow the results.

When to Talk About Quality of Life

At some point, usually after a chronic diagnosis, the focus slowly moves from treatment to comfort. Most owners notice it bit by bit: eating becomes hard work, grooming stops, the cat hides more, and treatments that used to help start to feel like a burden for both of you.

That’s a good time to talk with your vet about quality of life. Vets have simple checklists that turn a vague sense of “she’s not herself” into specific things you can discuss. Many practices also offer hospice consultations, in-home euthanasia, and grief support. None of it has to be decided in one conversation; it helps just to know the options are there.

Frequently Asked Questions

When does a cat become a senior? Under the 2021 AAHA/AAFP Feline Life Stage Guidelines, a cat is senior from age 10. Cats over 15 used to have a separate “geriatric” stage; it’s now part of senior, with checks getting more frequent as cats age. Cats aged 7 to 10 are “mature adults”, a good time for a first full set of tests to compare against later.

How often should senior cats see the vet? At least every six months for cats over 10. Full screening (CBC, chemistry, total T4, urinalysis, blood pressure) should happen at least yearly and ideally at every visit. Six-monthly visits make it more likely that kidney disease, hyperthyroidism, diabetes, and high blood pressure are found a stage earlier.

How can I tell if my older cat has joint pain? Cats rarely limp the way dogs do, so look for changes in habits: hesitating before jumps, taking stairs more carefully, messier fur on the lower back and tail base, sleeping in lower spots, irritability when touched around the hips, and accidents outside the litter box. About 90% of cats over 12 show joint degeneration on X-rays. If you see these changes, ask your vet for an assessment; there are more pain relief options than there used to be.

Why is my senior cat losing weight even though she’s still eating? Several common conditions in older cats cause weight loss while appetite stays normal or even increases. Hyperthyroidism is the typical one, and diabetes can do the same. Poorer absorption with age, a sore mouth that cuts meals short, intestinal disease, and early kidney disease are also possible. Start with blood and urine tests, and hold off on changing the diet until you have results.

See the vet twice a year, keep an eye out for small changes, smooth out the awkward spots at home, and talk to your vet when something shifts. Most older cats have good years ahead, and the aim is simply to make them comfortable.