Senior cat care: the complete guide
Senior cat care — biannual vet checks, kidney and thyroid screening, mobility, cognitive change, and how to manage the conditions of older cats. By Pet Capsule.
Cats age more gracefully than dogs in appearance but accumulate chronic disease just as reliably. Around three quarters of cats over 12 have chronic kidney disease, hyperthyroidism, dental disease, or all three. Most of these are highly manageable when caught early and become a series of crises when caught late.
The single most important shift after age 7 is **biannual rather than annual vet exams**, with full bloodwork including thyroid and urinalysis at each visit. The conditions that define senior cats — kidney disease, hyperthyroidism, diabetes, osteoarthritis — all progress quietly and reveal themselves at the bowl, the tray, and the bedside long before they cause obvious illness.
The second is **environmental adaptation**. Senior cats sleep more, climb less, and feel cold more. Lower-sided litter trays, more accessible water bowls, ramps to favourite perches, warmer beds, and gentler interactions extend dignified years considerably.
Wellness from age 7
Twice-yearly vet exam from age 7, twice-yearly bloodwork from age 10 including T4 thyroid, urinalysis (especially specific gravity, the kidney-screening number), blood pressure check from age 9, and a dental exam at each visit.
Vaccinations slow down further. Many vets titer-test or extend the cycle. Discuss with your vet — the answer depends on the cat's lifestyle and immune status.
Chronic kidney disease
The most common chronic condition of older cats. Early stages have no obvious symptoms — that's why screening matters. Detected at IRIS stage 1 or 2, treatment (renal diet, hydration support, blood-pressure control) can give years of normal life. Detected at stage 3 or 4, the prognosis is months.
Watch for: increased thirst, increased urination, weight loss, intermittent vomiting, decreased appetite. These are usually late signs.
Renal diets are the single highest-impact intervention. They are unpalatable to many cats — work with the vet on gradual transition and on managing antiemetics and appetite stimulants when needed.
Hyperthyroidism
Affects around 10% of cats over 10. Classic signs: weight loss despite voracious appetite, hyperactivity, vocalising at night, increased thirst, vomiting, diarrhoea. Diagnosed with a single blood test (T4).
Treatment is excellent: methimazole (oral or transdermal medication), iodine-restricted prescription diet, or radioactive iodine therapy (curative). Choice depends on the cat's temperament, the owner's ability to medicate, and concurrent diseases.
Osteoarthritis (the under-diagnosed senior condition)
Most older cats have some degree of joint pain that owners interpret as "getting old." Signs are subtle: less jumping, hesitating before jumping, missing the landing, sleeping in lower spots, reluctance to be picked up, less grooming the back end.
Treatment matters: weight control, joint-supportive diet, omega-3 supplementation, monthly anti-NGF injection (Solensia — a step change for feline arthritis), and environmental adaptation (lower-sided trays, ramps, warm beds, non-slip surfaces).
Cognitive change
Feline cognitive dysfunction is real and under-recognised. Signs: confusion, increased vocalisation (especially at night), altered sleep cycles, going to the wrong room, urinating outside the tray despite no urinary disease, blank staring, reduced grooming.
Management: enriched environment, predictable routine, comfortable warm sleeping spots, age-appropriate diet (some commercial senior diets have cognition-supportive nutrients), prescription medication (selegiline) in moderate cases, and a calm acceptance that this is part of the long goodbye.
Nutrition in the senior years
Senior cats often lose muscle mass while gaining or losing total weight. Adequate protein matters more, not less — unless kidney disease dictates moderation. Wet food becomes more important for hydration.
Tailor the diet to the condition: renal diet for CKD, iodine-restricted for hyperthyroid, joint-supportive for arthritis. A vet or veterinary nutritionist can guide.
Multiple water sources, including a fountain, often double water intake in senior cats. Wet food once or twice daily reduces strain on aging kidneys.
Quality of life and end-of-life
Cats often hide decline until very late, which makes the decision harder for owners. A quality-of-life scoring tool (HHHHHMM) used weekly highlights the trajectory rather than the daily snapshot.
In-home euthanasia is widely available and is far less stressful for senior cats than a clinic visit. Palliative-care vets can help bridge the period before that, with home visits, pain management, and hospice support.
Care checklists
Twice yearly
- Wellness exam, weight, body and muscle condition, dental, thyroid palpation
- Bloodwork + urinalysis from age 7
- Blood pressure check from age 9
- Mobility check — any new hesitation or stiffness?
Monthly
- Flea prevention
- Body and muscle check
- Litter habits review (urinating outside tray? straining? volume change?)
- Cognitive check — sleep cycle, interaction, vocalisation
Daily
- Wet food + fresh water in multiple bowls/fountain
- Gentle interactive play — adapt to mobility
- Tooth brushing or VOHC chew (where tolerated)
- Comfortable warm sleeping spots; lower-sided tray; ramps to favourites
- Prescribed medications (renal, thyroid, joint)
Red flags — see a vet today
- Sudden weight loss (more than 5% body weight)
- Marked increase in thirst and urination
- Urinating outside the tray
- Vomiting persisting >24 hours or recurring weekly
- Refusing food for more than 24 hours
- Difficulty urinating (male cats) — emergency within hours
- Sudden hiding for more than 12 hours
- Yellow tinge to gums or eyes (jaundice)
Frequently asked questions
When is my cat senior?
Generally 7+ years. Switch to twice-yearly vet visits and add bloodwork + urinalysis + T4 at each visit. Many silent conditions begin in this window.
My cat is drinking a lot more — what does that mean?
In senior cats, increased thirst is one of the strongest signals — kidney disease, diabetes, hyperthyroidism, or urinary problems all cause it. A vet visit with bloodwork and urinalysis within a week is the right pace.
Is renal food really that important?
Yes. It is the single biggest intervention for CKD and changes the trajectory significantly. The challenge is palatability — work with the vet on gradual transition, sometimes appetite stimulants in the early phase.
My senior cat is suddenly biting or growling — why?
In older cats this is often pain (dental, joint, urinary) or cognitive change. A vet exam is the first step before assuming behavioural cause.
How will I know when it's time?
Use a quality-of-life scale weekly. When good days are outnumbered by bad days, when basic dignity (eating, grooming, mobility, interest) is gone or going, talk to your vet about palliative care or euthanasia. In-home euthanasia is widely available and is the kindest option for most senior cats.