Most cats over eleven are hiding something from you, and it usually isn't misbehaviour.
I say that bluntly because it's the thing I wish more owners understood before it becomes a crisis. In referral work I see cats after something has already gone wrong: a sudden aggression case, a litter box problem that "came out of nowhere," a cat that stopped jumping onto the bed and everyone assumed she'd simply gone off her human. Time and again, the vet history shows a gap of twelve or fourteen months since the last full checkup. By the time a behaviour referral lands on my desk, the underlying medical issue has often been quietly building for a year.
1. Why Once a Year Stops Being Enough
A yearly checkup makes sense for a cat in the middle of its life. Things change slowly then. But cats age faster than that comfortable yearly rhythm suggests, and the pace isn't linear. A cat is considered senior from around eleven, and geriatric from about fifteen, and the physiological gap between those two points can be enormous. A huge amount can shift in twelve months once a cat crosses that threshold: kidney values can move from normal to concerning, thyroid hormone can creep upward, joints can stiffen enough to change how a cat uses the litter box entirely.
Vets increasingly recommend six-month intervals for cats over ten or eleven, not because it's good business, but because early bloodwork changes are genuinely reversible or manageable if caught early, and genuinely much harder to manage once a cat is symptomatic. Chronic kidney disease is the clearest example. Caught at an early stage, a change in diet and monitoring can add good years. Caught late, you're managing a crisis, not a condition.
2. What Actually Changes in an Older Cat's Body
Cats are extraordinarily good at masking pain and illness. It's an evolutionary hangover from being both predator and prey; a visibly unwell cat in the wild is a target. So the signs owners are watching for, limping, crying out, obvious weight loss, are usually the late-stage signs. The early ones look almost nothing like illness at all.
What I actually see, in behaviour consultations, tends to look like this:
- A cat becomes slightly more irritable when picked up, and the owner reads it as "getting grumpy in old age"
- A cat starts avoiding the litter box, or misses the edge, and the owner assumes it's spite or a dominance dispute with another cat
- A cat sleeps in a new spot, lower down, less inclined to jump, and everyone calls it "just getting lazy"
- A cat becomes quieter and less interested in interaction, and gets labelled independent
Every one of those has a plausible behavioural explanation. And sometimes that's exactly what it is. But arthritis, dental pain, hyperthyroidism and early kidney disease can produce every single item on that list, and a behaviour consultation without recent bloodwork is working half blind. This is why, before I take on almost any referral involving a cat over ten, I ask whether there's been a checkup in the last six months. If there hasn't, that's where we start.
3. What a Twice-Yearly Visit Actually Covers
It's worth knowing what you're actually paying for, because "checkup" undersells it once a cat is a senior. A proper senior visit generally includes a full physical exam, weight and body condition tracking, blood pressure, and bloodwork covering kidney and liver values, thyroid hormone, and a general blood count. Many vets will also suggest a urine sample, since concentration ability is one of the earliest markers of kidney change, often showing up before bloodwork does.
Here's a rough guide to what tends to get added as cats move through the senior years:
| Age | Typical focus | Why it matters |
|---|---|---|
| 7–10 | Baseline bloodwork, dental check, weight trend | Establishes what "normal" looks like for this individual cat |
| 11–14 | Blood pressure, thyroid panel, urine concentration | Hyperthyroidism and early kidney change often start here |
| 15+ | All of the above plus joint assessment, cognitive screening | Arthritis and cognitive decline become far more common |
That baseline matters more than people expect. A kidney value that's "normal for a cat" but has climbed steadily for your specific cat over three visits tells a vet something a single normal reading never could.
4. Where Owners Usually Go Wrong
The mistake I see most often isn't neglect. It's misattribution. Owners are attentive, they notice the change, and they just file it under the wrong cause. "She's slowing down because she's old" is the single most common thing I hear in a first consultation, and it's often true and also incomplete. Slowing down is a symptom. It has a cause. Sometimes that cause is simply age. Often it isn't, or it's age plus something manageable.
The second mistake is waiting for a symptom dramatic enough to justify an "extra" vet visit. Owners will happily book a checkup for a cat that's stopped eating, but won't book one for a cat that's eating fine and just seems a bit quieter. Quiet is exactly the stage you want to catch things at. Loud is the stage you're trying to avoid.
5. Making It Easier at Home
None of this requires turning your house into a monitoring station. A few habits do most of the work. Weigh your cat monthly if you can, even roughly, since gradual weight loss is one of the most reliable early indicators and one of the easiest to miss day to day. Keep half an eye on water bowl levels; a cat drinking noticeably more is a signal worth mentioning at the next visit, not a coincidence. And take behaviour changes seriously as data rather than personality. If your cat has gone from bounding onto the counter to hesitating and then not bothering, that's worth a conversation with your vet before the next scheduled visit, not after it.
If you're navigating a cat that's becoming harder to read as it ages, we've gone into related territory in what your cat's slow blink actually means and in indoor boredom signs most owners miss, both of which cover behaviour signals that can look purely psychological but often have a physical thread underneath them. I've also written about why cats act strange after owners travel, which touches on how sensitive older cats in particular are to routine disruption, including missed or delayed vet visits.
I'll be honest about the practical side too. Twice-yearly vet visits cost more than once-yearly ones, and for multi-cat households that adds up. But weigh it against the alternative, which is usually a much larger bill six months later attached to a condition that's now an emergency rather than a monitored, manageable one. That's not a scare tactic. It's just the shape the numbers tend to take.
Frequently Asked Questions
My cat is twelve and seems completely healthy. Do we really need two visits a year? Yes, and this is exactly the situation the recommendation is aimed at. Cats mask illness well, so "seems healthy" and "is healthy" aren't the same thing at twelve. A healthy-seeming senior cat is precisely who benefits most from catching a change early, while it's still just a number on a lab report rather than a symptom you can see.
Is bloodwork really necessary every six months, or just a physical exam? A physical exam alone will miss most kidney, thyroid and liver changes in their early stages, since a cat can look and behave completely normally with values that are already drifting. If cost is a concern, ask your vet whether alternating a full panel with a lighter screen every six months is reasonable for your cat's specific risk profile.
My cat hates the vet and gets stressed on every visit. How do I balance that against more frequent visits? This is a fair concern and worth raising directly with your vet, some of whom now offer at-home blood draws or lower-stress "cat only" clinic hours. Pheromone spray in the carrier beforehand and a towel-covered carrier for the car both genuinely help. The stress of a visit is real, but it's usually shorter-lived than the stress of an undiagnosed condition progressing.
How do I know if a behaviour change is "just age" or something to get checked? Treat any new or worsening behaviour change in a senior cat as worth mentioning at a vet visit rather than deciding in advance it's harmless. You're not diagnosing anything yourself, you're just refusing to auto-file it under old age without a second opinion.
What's the single most useful thing I can track at home between visits? Weight, tracked monthly and written down somewhere, even a notes app. It's the simplest data point to collect and one of the most sensitive early indicators of a wide range of senior cat conditions.
If you want a fuller sense of how ageing shows up differently across breeds, our guide on Maine Coons and how large they grow is a useful companion read, since body size and frame affect how joint and weight changes present in older cats.
Post a Comment