Your Indoor Cat Still Needs a Vet — This Is the Hill We'll Die On 🐱

We hear it at least once a week at our Alhambra cat vet clinic: "She's an indoor cat, she doesn't really need to come in." And every time, we want to gently but firmly disagree. Indoor cats are protected from a lot — cars, coyotes, fights, FIV. But they're not protected from dental disease, kidney failure, hyperthyroidism, diabetes, obesity, or the slow quiet decline that comes with aging. And because cats are masters of hiding pain, by the time you notice something's wrong, things have often been off for months.

What We Actually Check During a Cat Wellness Exam

People sometimes ask what we're even looking for during a wellness exam. Fair question. Here's the short list: weight (and weight trends over time), teeth and gums, heart and lung sounds, thyroid palpation, kidney size, coat condition, and joint mobility.

That doesn't sound like much. But a 10-minute exam tells us a lot. We're comparing today's cat to last year's cat, and that comparison is where we catch things early. A half-pound weight loss in a cat that weighed nine pounds last April? That gets our attention. A heart murmur that wasn't there before? We're flagging that. Gums that are a little more inflamed than last visit? We're talking about dental care.

The exam isn't about finding something dramatic. It's about catching the slow stuff before it becomes the dramatic stuff.

The Stuff Indoor Cats Get That Owners Don't Expect

Here's what we see all the time at our Alhambra clinic in cats that have never set foot outside:

• Dental disease. Just as bad as dogs — maybe worse, because cats are harder to examine at home. Most cats over five have some degree of dental disease, and a lot of them are eating through significant mouth pain without showing any obvious signs. They just chew on one side, or swallow kibble whole, and nobody notices.
• Kidney disease. Incredibly common in cats over seven. The early signs are subtle — drinking a bit more water, producing slightly larger clumps in the litter box. By the time a cat looks sick from kidney disease, they've often lost a significant amount of kidney function already. Bloodwork catches it earlier.
• Hyperthyroidism. Mostly older cats. Weight loss despite eating well, restlessness, vomiting, sometimes a racing heart. Owners often think their cat is just "energetic for their age." Nope — their thyroid is in overdrive.
• Obesity. If your cat looks like a throw pillow, that's not cute — it's a health problem. And here's the scary part: you can't just crash-diet an overweight cat. Cats that stop eating or lose weight too fast are at real risk for hepatic lipidosis — fatty liver disease — which can be fatal. Weight loss in cats has to be gradual and supervised.
• Diabetes. Especially in overweight cats. Increased thirst, increased urination, weight loss despite a good appetite. Very manageable with treatment, but you've got to catch it.
• Urinary issues. Blocked male cats are a genuine emergency. A male cat that's straining in the litter box and not producing urine can die within 24–48 hours if the blockage isn't relieved. This is not a "wait and see" situation. Ever.

Signs Most Cat Owners Miss

Cats don't limp around dramatically. They just get a little quieter, a little slower. Here's what to actually watch for:

• Drinking more water than usual
• Larger clumps in the litter box (or more frequent urination)
• Sleeping in new or unusual spots
• Subtle weight loss you can't see under all that fur
• Bad breath
• Not grooming as well — matted fur, dandruff, greasy coat
• Jumping down from the couch instead of up onto the counter

If you're thinking "she's just getting old," that might be true. But it might also be something we can treat. Arthritis, thyroid problems, early kidney disease — these are all things where catching it early changes the outcome. The "just getting old" assumption has cost a lot of cats a lot of comfortable years.

Fleas — Yes, Even Indoor Cats

This one always surprises people. "But she never goes outside!"

Fleas come in on your shoes, your pants, your grocery bags. Your dog goes for a walk, picks up a flea, and suddenly your indoor cat is scratching. We see indoor cats with fleas constantly in Alhambra and South Pasadena, especially in spring and summer when people leave windows and doors open. The owners are always surprised.

Year-round flea prevention is the easiest fix. Talk to us about what works best for your cat — there are good topical and oral options that make this a non-issue.

The Lily Warning

Every Easter and spring, someone in Highland Park or Pasadena brings in a cat with acute kidney failure from lily exposure. Every single year.

The cat brushed against the flower, groomed the pollen off its fur, and within hours it's a crisis. All parts of true lilies — Easter lilies, tiger lilies, Asiatic lilies, daylilies — are toxic to cats. The pollen alone is enough. Even the water in the vase.

If someone gives you lilies, they go outside. Not on a high shelf. Not in a room with the door closed. Outside. Or honestly, just don't bring them into the house at all. We've seen too many cats in kidney failure from this to sugarcoat it.

When to Come In

Annual — every cat, every year, no exceptions. This is the baseline. Even if your cat seems perfectly healthy. That's the whole point — we want to see them when they're healthy so we have something to compare against when they're not.

Twice a year if your cat is over 10. Things change faster in senior cats. Six months is a long time when you're 14 in cat years.

Come in soon if you're noticing:

• Drinking more water than usual
• Unexplained weight change — up or down
• Bad breath
• Vomiting more than once a month (no, frequent vomiting is not normal for cats)

Come in now — don't wait:

• Straining to urinate, especially male cats — this is an emergency
• Not eating for 24 or more hours
• Labored breathing or open-mouth breathing
• Hiding and refusing to come out
• Sudden inability to use back legs (could indicate a blood clot — time matters)

Once a Year. That's All We're Asking.

We see cats from all over — Highland Park, South Pasadena, Pasadena, San Gabriel — and the story is always the same. "I didn't think indoor cats needed to come in." They do. Once a year. That's all we're asking.

Your cat isn't going to thank you for the car ride. We know. But that one visit a year is how we catch the kidney disease at stage two instead of stage four. It's how we find the dental infection before it turns into a jaw abscess. It's how we notice the thyroid nodule when it's new, not when your cat has already lost two pounds.

Cats are good at hiding things. That's what makes them cats. But it's also what makes that annual exam matter more, not less. Give us 10 minutes with your cat once a year, and we'll do our best to keep them comfortable for a long time.