Senior Cat Care in the San Gabriel Valley: What Changes After Your Cat Turns 10

Most senior cat owners come in once a year. The cat seems fine — eating normally, sleeping a lot, but they always did. The owner isn't worried. And honestly, that's exactly the problem.

Cats are exceptional at hiding illness. By the time a senior cat looks unwell, things have often been declining for months. This is why the standard of care for cats over 10 is twice-yearly exams with bloodwork — not because we expect to find something alarming every visit, but because a 6-month interval lets us catch what's slowly changing before it's advanced. We see senior cats at South Pasadena Animal Hospital in Alhambra regularly, and the conditions we find in that blood panel at month six are the ones we're glad we didn't wait 12 months to discover.

When does a cat become "senior"?

Around age 10–11 is the general consensus. Geriatric is typically 15 and older. A 10-year-old cat is somewhere in their mid-50s in human terms — the age where a doctor starts running more tests, not fewer.

The practical change at age 10: once-a-year visits are no longer the right baseline. Twice-yearly exams with bloodwork become the standard of care. The conditions that develop in older cats — hyperthyroidism, kidney disease, hypertension — move slowly. A 12-month gap is long enough to miss a meaningful change.

The most common health issues in senior cats

Hyperthyroidism

The most common hormonal disorder we see in older cats. The thyroid gland overproduces thyroid hormone, which drives the metabolism up. In practice: a cat that's eating well, maybe more than usual, but losing weight. Active, possibly restless. Occasionally vomiting. Coat looks rough.

Here's what catches people off guard: a lot of owners see this and think their cat is just aging well. Eating heartily, still moving around — that seems fine. Meanwhile the thyroid is running too hot, and the chronic elevated heart rate and blood pressure are quietly damaging the heart and kidneys. We catch it with a T4 blood test. Treatment is very manageable — daily oral medication, a prescription iodine-limited diet, radioactive iodine therapy, or surgery are all options. The earlier it's caught, the more straightforward management tends to be. We have a full post on cat hyperthyroidism if you want more detail.

Chronic kidney disease (CKD)

Kidney disease in cats is genuinely common. Most cats over 15 have it to some degree. Many develop early-stage CKD in their early-to-mid teens. The kidneys lose the ability to filter waste, concentrate urine, and regulate fluid balance.

Early CKD has no symptoms. The cat doesn't feel bad yet. The only way to detect it is bloodwork and urinalysis — specifically BUN, creatinine, SDMA, and urine concentration. That's the whole argument for twice-yearly labs in a senior cat: early detection changes the trajectory. With dietary changes, hydration support, and medication we can slow progression significantly. Found late, the options narrow.

More advanced CKD looks like: drinking and urinating noticeably more, weight loss, reduced appetite, vomiting, lethargy. If your older cat is drinking more water than usual, come in. Don't wait for the next scheduled appointment — that's a meaningful sign.

Dental disease

By age 10, most cats have dental disease significant enough to cause discomfort. Tartar accumulation over years leads to gum recession, periodontal disease, and tooth resorption — a painful process where the tooth structure slowly breaks down from the root outward. Cats don't vocalize this. They chew on the other side, stop grooming the lower back, become slightly less tolerant of face handling. Subtle, but real.

A dental cleaning under anesthesia is how we assess and treat what's below the gumline. Pre-anesthetic bloodwork is standard for senior patients. Consistently, owners of cats who've had dental work in their senior years tell us the cat seemed years younger afterward — more playful, more affectionate, eating better. That's what resolving months of unrecognized pain looks like.

Arthritis

Joint disease is very common in older cats and almost universally missed. Why? Cats don't limp like dogs. They just stop jumping to places they used to go. Sleep lower. Groom less at the lower back and tail base. Get less tolerant of being picked up or touched around the hips. If your senior cat has become more sedentary or less agile — not jumping to the windowsill, reluctant to come upstairs — mention it. Physical exam and your observations usually tell us what we need to know, and there are good management options.

High blood pressure (hypertension)

Usually secondary to hyperthyroidism or kidney disease. Left unchecked, hypertension can cause retinal detachment — sudden irreversible blindness — along with heart changes and neurological symptoms. Blood pressure measurement in cats takes about two minutes with a small non-invasive cuff. We include it for senior cats with relevant risk factors. A quick check that can catch something serious before it becomes a crisis.

What a senior cat wellness visit looks like at SPAH

For cats 10 and older, we recommend coming in twice a year. Each visit is a full physical — weight, heart and lung sounds, abdominal palpation, dental assessment, joint mobility check, coat and skin condition — plus bloodwork and urinalysis. We track values across visits. A creatinine level that's within range but trending up over three panels tells a different story than one that's been flat for years.

We spend time going over what you've noticed at home. "She's not jumping to the counter anymore." "He seems less interested in playing." "She's drinking more water." These observations are often the first indicator of something worth a closer look. Come in with your list. Nothing is too small to mention.

Our services page covers what we offer, and our pricing page lists exam and bloodwork fees. Book online or call us at (626) 441-1314.

Nutrition and weight in senior cats

Weight trends matter more as cats age — in both directions. Unexplained weight loss in a senior cat should prompt a vet visit even between scheduled appointments. It's one of the most reliable early signals something is wrong. Unintentional weight gain is also worth noting, since reduced activity from arthritis or other pain can drive it without the cat seeming "sick."

Diet should follow bloodwork results, not label marketing. Senior cats often do well with higher-protein diets that preserve lean muscle. Cats with confirmed kidney disease need phosphorus-restricted prescription food — that's not optional once CKD is diagnosed. "Senior formula" on a bag means very little without knowing what your specific cat's labs show.

Questions about senior cat care in the SGV