How much should an adult cat actually be eating?

Caloric needs vary by activity level and reproductive status, but a commonly cited benchmark is that a neutered, moderately active 10-pound indoor cat needs roughly 200 to 250 calories a day, less than an intact cat of the same weight because spaying and neutering lower resting metabolic rate by an estimated 20 to 30 percent (WSAVA Global Nutrition Committee, 2021). Free feeding dry food around the clock is one of the biggest drivers of feline weight gain, since a cat grazing on a full bowl has no built-in portion control the way scheduled meals provide. The World Small Animal Veterinary Association recommends measuring food by weight on a gram scale rather than by volume, since a single scoop of kibble can vary in calories by a meaningful margin depending on how it settles in the cup.

Adult cats are obligate carnivores that require dietary taurine, arachidonic acid, and preformed vitamin A, nutrients they cannot synthesize adequately from plant sources the way dogs can, which is why the Association of American Feed Control Officials nutrient profiles for cats differ substantially from those for dogs (Cornell Feline Health Center, n.d.). Owners switching foods should transition gradually over 7 to 10 days, mixing increasing proportions of the new diet with the old, since abrupt diet changes are a common trigger for vomiting and diarrhea in otherwise healthy adult cats.

Why is my indoor adult cat gaining weight even though I haven't changed anything?

An estimated 60 percent of cats in the United States are classified as overweight or obese, according to survey data from the Association for Pet Obesity Prevention, and the risk climbs steadily through the adult years as activity naturally declines in an indoor environment (Association for Pet Obesity Prevention, 2022). Excess weight in cats is directly linked to type 2 diabetes mellitus, osteoarthritis, and lower urinary tract disease, and a cat that is even 10 to 15 percent over its ideal weight faces measurably higher anesthetic and surgical risk if it ever needs a procedure. Body condition scoring on a 9-point scale, where a cat's ribs should be easily felt but not visually prominent under a light layer of fat, is a more reliable check than the scale number alone because ideal weight varies so much by frame size.

Weight gain in an adult cat that hasn't had an obvious diet change can also signal an underlying medical issue such as hypothyroidism or early diabetes, though feline hypothyroidism is rare compared to the condition in dogs. A veterinary weigh-in every 6 to 12 months catches gradual gain before it becomes entrenched, since cats are small enough that a 1-pound increase represents a proportionally large change compared with a dog of similar size.

Does an adult cat that seems perfectly healthy still need yearly vet visits?

Cats are biologically wired to mask pain and illness, a survival instinct inherited from wild ancestors where showing weakness invited predation, and the American Association of Feline Practitioners recommends a wellness exam at least once a year for adult cats even when no problems are apparent (AAFP, 2021). These visits typically include a physical exam, weight and body condition check, dental assessment, and a discussion of any subtle changes in litter box habits, water intake, or activity that an owner might not think to mention unprompted. Baseline bloodwork starting in the mature adult years, generally from about age 7 onward, gives a veterinarian a reference point for kidney and liver values before problems develop, which makes future test results far more useful for catching early disease.

Core vaccines for adult cats typically include feline viral rhinotracheitis, calicivirus, and panleukopenia (commonly bundled as FVRCP), with rabies vaccination required by law in most U.S. states regardless of whether the cat goes outdoors, since indoor cats can still be exposed through an open window, a bat in the house, or an accidental escape (AVMA, n.d.). Vaccine intervals depend on the product and the cat's lifestyle risk, which is exactly the kind of judgment call that makes a yearly conversation with a veterinarian more valuable than following a generic schedule found online.

Why does my adult cat's breath suddenly smell bad, and does it matter?

By age 3, an estimated 70 percent of cats already show some sign of dental disease, ranging from tartar buildup to gingivitis to more advanced periodontal disease, according to veterinary dental surveys referenced by the Cornell Feline Health Center (Cornell Feline Health Center, n.d.Bad breath is rarely just cosmetic; it usually signals bacterial buildup along the gumline that, left untreated, can progress to tooth root abscesses and, over years, has been associated with chronic low-grade inflammation affecting other organs. Cats are also prone to a painful condition called tooth resorption, where the body breaks down the tooth structure from within, which is why a veterinary dental exam under anesthesia, including full-mouth X-rays, is often necessary to catch disease that isn't visible in an awake exam.

Daily tooth brushing with a pet-safe enzymatic toothpaste is the gold standard for prevention, though the American Veterinary Dental College acknowledges that even brushing a few times a week provides meaningful benefit over none at all. Dental treats and prescription dental diets carrying the Veterinary Oral Health Council seal of acceptance have been tested to show a measurable reduction in plaque or tartar, which makes that seal a useful shortcut for owners choosing between products at the pet store.

Why has my adult cat's personality or behavior changed?

A sudden shift in an adult cat's behavior, such as increased hiding, irritability, or a previously social cat avoiding contact, is one of the more reliable early signals of pain or illness, since cats communicate discomfort through withdrawal rather than the obvious limping or whimpering seen in dogs. Litter box changes are especially significant: urinating outside the box, straining, or vocalizing while urinating can indicate feline lower urinary tract disease or, in male cats, a life-threatening urethral obstruction that the Cornell Feline Health Center flags as a same-day emergency (Cornell Feline Health Center, n.d.). Increased water intake and urination together, rather than either alone, are the classic early pattern for both diabetes and chronic kidney disease, both of which become more common as cats move through and beyond the adult years.

Environmental stress, including a new pet, a move, or even rearranged furniture, can also trigger behavior changes in cats through a stress response that veterinary behaviorists link to flare-ups of idiopathic cystitis, a bladder inflammation with no identifiable infectious cause. Because the physical and behavioral causes overlap so much, any new behavior change in an adult cat that persists more than a day or two warrants a veterinary visit rather than an assumption that the cat is simply being difficult.

How much exercise and enrichment does an indoor adult cat actually need?

Indoor cats face a real risk of both physical deconditioning and boredom-driven behavior problems, since the natural feline day in the wild involves dozens of short hunting sequences rather than the largely sedentary existence many indoor cats experience. Two or three short play sessions a day using a wand toy that mimics prey movement, each lasting 5 to 10 minutes, more closely matches a cat's natural hunt-catch-eat-groom-sleep cycle than a single long session and tends to hold interest better. Vertical space matters as much as floor space; cat trees, window perches, and shelving let a cat exercise its instinct to observe territory from height, which the Ohio State University Indoor Pet Initiative identifies as a core unmet need in many indoor cat households (Ohio State University Indoor Pet Initiative, n.d.).

Food puzzles and slow feeders that require a cat to work for part of its daily calories reduce the rapid gulping associated with vomiting after meals and add mental stimulation that a bowl of free-choice food does not provide. Rotating toys weekly rather than leaving the same handful out permanently helps prevent the habituation that makes a cat lose interest in enrichment items after the novelty wears off.

What preventive care besides vaccines should an adult cat be getting?

Year-round flea, tick, and heartworm prevention is recommended for cats regardless of whether they go outdoors, since fleas can be carried inside on clothing or other pets and mosquitoes carrying heartworm larvae can enter through a window screen or an open door; the American Heartworm Society notes that heartworm disease in cats is harder to diagnose and has no approved treatment, which makes prevention the only real option (American Heartworm Society, n.d.). Intestinal parasite screening via a fecal exam is typically recommended annually even for indoor-only cats, since parasites like roundworms can be transmitted through contaminated soil tracked in on shoes or through an insect a cat catches indoors.

Microchipping is a low-cost, one-time procedure that dramatically improves the odds of reunification if an indoor cat slips outside, and the American Society for the Prevention of Cruelty to Animals recommends registering and keeping the chip's contact information current, since a chip with outdated owner information is far less useful in an emergency (ASPCA, n.d.). Spaying or neutering, if not already done, reduces the risk of mammary tumors, pyometra, and roaming-related injuries, and is typically recommended before 6 months of age but still carries health benefits when performed later in an adult cat that was adopted unaltered.