My cat is limping: what to check, and when to call

A limp is one of the few problems a cat cannot hide. They can mask pain, skip meals quietly and sleep off a fever without anyone noticing, but a leg that hurts shows in every step. The useful question is not whether to worry, it is how much, and for how long.

Most limps in otherwise bright, eating, sociable cats are minor: a strained muscle from a bad landing, a bruised pad, a claw that caught and tore. Most of those improve visibly within a day or two of rest. The job of the home check is to separate that large, harmless group from the small group that cannot wait: fractures, bites, infections and the gradual limps that signal arthritis.

First, watch the walk

Before touching anything, watch the cat move across the room on its own terms. A limp has a grammar. A cat that shortens the step on one front leg, head bobbing up as the sore leg lands, has a front-leg problem. A shortened stride or a hip that dips on one side points behind. Toe-touching, where the paw makes contact but carries no weight, sits between a full limp and a carried leg.

Note when it happens. A limp that is worst after rest and warms out of it, the classic stiff old gentleman pattern, suggests joint disease. A limp that is constant, or worse after exercise, suggests injury. A limp that appeared the moment the cat came in from outside deserves a careful look at the paw before anything else.

The five-minute home check

Do this with the cat relaxed, ideally lying on a lap or a blanket, and stop if the cat objects. You are gathering information, not treating.

1. 1Start at the paw. Spread the toes gently and look at every pad. Thorns, splinters, small cuts, matted fur between the pads and swollen or reddened skin all cause dramatic limps. Smell matters here: a foul smell from a paw can mean infection.
2. 2Check every claw. A torn or broken claw, caught in a carpet or a fence, is one of the most common causes of a sudden limp with a drop of blood. Look for a claw that is shorter, split or missing compared with its neighbours.
3. 3Work up the leg. Run a flat hand slowly up the leg, comparing left with right. Feel for heat, swelling, or a spot where the skin twitches or the cat turns its head. That flinch localises the pain better than any amount of looking.
4. 4Flex gently. If the cat is still relaxed, bend and straighten each joint a small amount. Grinding, resistance or a pulled-away leg tells you which joint hurts. Do not push through resistance.
5. 5Check the whole cat. A limping cat that is also quiet, hiding or off its food is a different case from a limping cat that still headbutts you for dinner. The whole picture decides the urgency, not the leg alone.

What the pattern tells you

The last row is rare but worth knowing. A saddle thrombus, a clot blocking blood flow to the hind legs, presents as sudden hind-limb weakness or paralysis with cold paws and obvious distress. It looks like an injury and is not one.

The thorn, the sprain and the broken toe

The three injuries that fill most appointment slots are worth picturing. The foreign body, a grass seed or thorn in the pad or between the toes, causes a sudden limp and relentless licking at one spot, and is often visible on the home check. The sprain, from a mistimed jump off a wardrobe, causes a limp with nothing to see: no wound, no swelling you can find, just a cat favouring a leg for a few days. The fractured toe, typically from a foot meeting the paw or a landing gone wrong, looks identical to the sprain from the outside, which is exactly why the 24-to-48-hour rule exists.

A limp that is a sprain today should be a noticeably better sprain tomorrow. Improvement is the diagnostic test you get for free.

Rest, the one treatment you can give

Whatever the cause, the home treatment is the same: enforced rest. Keep the cat indoors. Move food, water, the litter tray and a bed onto one level of the house so there is no need for stairs. Block access to the cat tree and the windowsill that requires a leap. Skip the feather wand for a few days.

Two things not to do. Never give human painkillers: paracetamol and ibuprofen are genuinely dangerous to cats even in tiny amounts. And do not splint or bandage anything yourself; a badly applied bandage causes more damage than the limp.

The checker below weighs up weight-bearing, how the limp started and the other signs you can see, and tells you which of the three tracks, watch, book, or call today, your cat's pattern falls into.

Verdict by situation

• The outdoor cat limping tonight: check the paw, enforce rest, and judge it fresh in the morning. Improving means watch; the same or worse means call.
• The older cat with a slow, stiff limp: this is an appointment, not an emergency, and it is worth making. Modern arthritis management is genuinely good.
• The kitten limping: be quicker to call. Young bones and growth plates are vulnerable, and kittens do not do stoic.
• The indoor cat after a known fall: if it will not bear weight or you heard the yelp, same-day is right.

When to call your vet

See a vet the same day if the cat will not put any weight on the leg, if there is a wound, an exposed claw quick or a bad smell, if the limb looks misshapen, or if the cat is hiding, growling or not eating alongside the limp. Go immediately if the hind legs seem weak or paralysed, the paws feel cold, or the cat is breathing oddly. For everything else, the rule is simple: a limp that is not clearly improving within 24 to 48 hours of rest earns an appointment. You know what this cat's normal walk looks like better than anyone.