Why do cats hide pain?
In the wild, an animal that looks weak gets targeted. Cats kept that instinct: they mask pain so well that a cat in real pain can look completely normal, even to the person closest to them (PetMD).
That's why "is my cat in pain" is the wrong question to ask directly — the right question is "what has changed?". PetMD's guidance is to watch for even the slightest shifts in routine, because those whispers are usually all you get.
The signs of pain in cats
PetMD's checklist (built with the International Veterinary Academy of Pain Management) groups into four areas:
- Activity and posture — sleeping more, reluctance to jump or climb, shuffling or gingerly walking, a hunched back or tucked abdomen, limping, shifting weight, lower head posture.
- Touch sensitivity — flinching, growling or biting when a specific spot is touched; a lap cat who suddenly can't stand being held.
- Daily habits — eating less, litter-box accidents after years of reliability (climbing into a high-sided box may simply hurt), stopping grooming until the coat looks unkempt.
- Face and voice — a vacant or glazed stare, squinting, dilated pupils, purring when clearly not content, growling or groaning.
PetMD's chronic-pain reference adds trembling, depression, and snapping when reached for; sudden sharp pain brings rapid, shallow breathing and agitation.
Signs of pain after surgery or dental work
Cats are especially good at acting normal after a procedure — which is exactly why PetMD's surgery guidance says to keep giving prescribed pain medication even if the cat seems fine. Pain after surgery is expected, not optional.
Watch for the post-op versions of the same signs: hiding, eating less, sleeping more, no interest in favorite toys or treats, reluctance to move, or a protective posture near the surgical site. If you notice them, tell your vet rather than waiting for the refill to run out.
What to do — and what never to do
If you see the signs, get your cat evaluated — pain in cats is diagnosed by a full veterinary exam that hunts for the underlying cause (PetMD). Treatment usually combines prescription pain medication, joint supplements for stiff cats, and therapies like acupuncture or massage.
The absolute rule: never give human pain medication. PetMD warns that cats metabolize drugs differently and can die from something as ordinary as acetaminophen (Tylenol). No ibuprofen, no leftovers, no guessing at doses — vet-prescribed only.
Frequently asked questions
How do I know if my cat is in pain or just old?
'Slowing down' is not a diagnosis. PetMD treats reduced activity, reluctance to jump, poor grooming and appetite changes as pain signals worth a vet visit — many causes (arthritis, dental disease, kidney disease) are treatable at any age.
Do cats purr when they're in pain?
Yes. PetMD notes purring isn't only contentment — cats, especially gentle ones, may purr when frightened or hurting. Judge purring alongside other changes in behavior, not alone.
What are the first signs of pain in cats?
Usually behavioral: sleeping more, hiding, eating less, jumping less, over-grooming or under-grooming one spot, or reacting when a particular area is touched (PetMD's IVAPM-based checklist).
Can I give my cat Tylenol or aspirin for pain?
Never. PetMD warns acetaminophen (Tylenol) can kill cats, and cats metabolize human medications differently. Only pain medication prescribed by your veterinarian is safe.