Signs Your Cat Is in Pain (What Cats Hide)
A cat in pain doesn’t cry, doesn’t limp dramatically, doesn’t come to you looking for help. They go quiet. They stop doing normal things. They hide. If you don’t know what you’re looking for, you can miss a genuinely suffering cat for weeks. Here’s what pain actually looks like in cats.
Cats show pain through subtle behavioral changes far more than through obvious physical signs. Watch for: reduced activity, hiding, changes in grooming (either over-grooming a specific spot or stopping grooming entirely), reduced appetite, aggression when touched, changes in sleeping location, a hunched posture, and tension around the eyes. Never give a cat human pain medication — many are toxic. If you suspect pain, see a vet.
Why cats hide pain so well
Cats are both predator and prey. In evolutionary terms, showing pain or weakness makes an animal a target — for other predators, for rivals, for anyone who might see them as an easier meal or an easier fight. Cats evolved to conceal signs of illness or injury unless they absolutely cannot.
Domestic life hasn’t changed this instinct. A cat with a broken tooth, a stone in a joint, a chronic urinary infection, or advanced arthritis will often continue to eat, use the litter box, and appear to move normally — right up until the pain is severe enough that concealment fails. This is why owners are so often shocked to hear at a vet visit that their apparently fine cat has been suffering for months.
Behavioral signs (usually the first to appear)
Behavior changes almost always show before physical signs. Learning to read behavioral pain signals is the single most useful skill for cat owners.
Reduced activity
The cat that used to jump on the counter now stays on the floor. The cat that ran around the house each evening now sleeps through it. Reduced play, reduced exploration, reduced movement generally. Often the earliest sign of any painful condition, and often dismissed as “getting older.”
Hiding or seeking isolation
A cat that starts spending time in unusual places — under beds, in closets, in corners of rooms they don’t normally use — is often uncomfortable and looking for somewhere private. This is especially significant if the cat previously spent time with the family.
Changes in grooming
Two patterns to watch for. First, over-grooming a specific area — a cat licking one spot on their side, belly, or leg repeatedly is often addressing pain in that area. Second, reduced grooming overall — a matted or greasy coat in a cat who used to be well-groomed usually signals pain that makes the twisting movements of grooming difficult (often hip or spine pain).
Reduced appetite
Cats in pain often eat less. Dental pain specifically may show as approaching food and then walking away, or eating on one side of the mouth, or dropping food. Non-oral pain reduces appetite more generally.
Changes in litter box behavior
A cat in pain may: struggle to get into or out of a high-sided box (arthritis), stop covering waste (spinal or joint pain), start urinating or defecating outside the box (pain when using the box means they associate the box with pain), or have accidents on the way to the box.
Aggression or defensive behavior
A cat that becomes snappy or aggressive when touched, especially in specific areas, is often protecting a painful spot. Cats that were previously affectionate and become withdrawn or reactive should be assessed for pain.
Changes in vocalization
Two directions. Some cats become more vocal — increased meowing, crying at night, wailing. Others become quieter than usual, especially cats who normally vocalize. A change in the cat’s baseline vocal pattern is meaningful.
Restlessness or difficulty settling
A cat that can’t seem to find a comfortable position, gets up frequently, changes sleeping spots often. Pain that hurts more in certain positions produces this pattern.
Changes in interaction
Reduced greeting when you come home, reduced purring, reduced rubbing against you. Or the opposite — becoming unusually clingy. Either direction is worth noting if it’s a change from baseline.
Physical signs
Physical pain signs in cats are usually more subtle than in dogs. The most useful ones:
Posture
A cat in pain often adopts a hunched posture with the back slightly arched, weight pulled toward the front legs, and head lowered. Compare to their normal loose, relaxed sitting or lying position. A “tucked up” abdomen — where the belly seems drawn in tightly — often indicates abdominal pain.
Gait changes
Subtle limping, walking stiffly, reluctance to jump, jumping down cautiously rather than gracefully, hopping up onto surfaces in stages rather than in one leap. Any change in how the cat moves is worth investigating.
Breathing
Painful cats often breathe more shallowly and faster than usual. Normal cat respiration at rest is 20–30 breaths per minute. Consistently faster than this, especially when the cat is not overheated, can indicate pain or another problem.
Coat and body condition
A cat in chronic pain often loses weight or becomes generally scruffy. The coat looks less bright, less well-kept. Muscle mass reduces in areas the cat is favoring.
The Feline Grimace Scale
Veterinary researchers have developed a validated tool for assessing cat pain from facial expression alone — the Feline Grimace Scale. It looks at five specific features. Any of these being present suggests pain; multiple features being present suggests significant pain.
| Feature | Normal | Pain |
|---|---|---|
| Ear position | Forward, upright | Flattened, rotated outward, or held low |
| Eye shape | Open, round | Squinted, partly closed |
| Muzzle tension | Rounded, relaxed | Tense, elongated, flattened |
| Whisker position | Loose, relaxed | Straight, pushed forward or clumped together |
| Head position | Above shoulders | Held level with or below shoulders |
This scale is validated and used clinically. If several of these features are visible in your cat, that’s meaningful pain and warrants a vet visit.
Common sources of pain in cats
Understanding what’s most likely to be causing pain helps direct the vet conversation.
Dental disease
The most commonly missed source of chronic pain in cats. Tooth resorption, gingivitis, broken teeth, and abscesses cause continuous pain that cats hide well but that affects their daily life significantly. A dental exam and cleaning under anesthesia often reveals problems the owner had no idea existed.
Arthritis
Chronic joint disease is extremely common in cats over 10 — studies suggest 60–90% of senior cats have some degree of arthritis, yet it’s dramatically underdiagnosed. Cats don’t limp obviously; they just move less. Reluctance to jump, avoiding stairs, and reduced grooming of the lower back are classic signs.
Urinary problems
Cystitis, FLUTD (feline lower urinary tract disease), and blockages cause significant pain that presents as frequent litter box visits, straining, blood in the urine, or urinating outside the box.
Injuries
Cats hide injuries as much as they hide illness. Falls, cat fights, being stepped on, or getting caught in something can cause pain from bruising, sprains, or fractures without obvious visible injury.
Ear infections
Chronic ear infections cause discomfort that manifests as head shaking, scratching at the ear, tilting the head, or reluctance to be touched around the head.
Digestive pain
Constipation, IBD, pancreatitis, and other digestive conditions cause abdominal pain that presents as hunched posture, reduced appetite, or the “tucked up” belly appearance.
Cancer
Various cancers cause pain, either directly from the tumor or indirectly from associated inflammation. Weight loss, reduced appetite, and behavioral changes without another explanation warrant a full vet workup.
Never give human pain medication to cats
Cat pain has to be treated with cat-specific medications, prescribed by a vet at cat-appropriate doses. Options include gabapentin (widely used), buprenorphine (opioid, common for acute pain), NSAIDs specifically formulated and dosed for cats (used more carefully than in dogs due to kidney sensitivity), and adjunctive therapies like laser therapy or acupuncture for chronic pain.
What to do if you suspect pain
- Document what you’re seeing. Video is useful — subtle gait changes and behavioral shifts are much easier to communicate to a vet through video than through description.
- Note timing. When did the changes start? Are they constant or intermittent? Better in the morning or evening? After activity or at rest?
- Note any triggers. Does the cat react when touched in a specific area? When jumping? When using the litter box?
- Don’t wait for the cat to be obviously suffering. Subtle signs at this stage often mean substantial pain that will only get worse without intervention.
- Book a vet visit. A good vet will do a physical exam looking specifically for pain sources and often recommend bloodwork and imaging to identify the underlying cause.
Pain in cats is treatable in most cases — often dramatically so. A cat who has been coping with chronic discomfort for months can appear years younger within weeks of appropriate treatment. The barrier isn’t the availability of treatment; it’s recognising the problem in the first place.