Updated October 14, 2026. Fact-checked against veterinary sources; review by a licensed veterinarian is in progress. See our editorial policy.
Quick answer: Cats hide pain well, so a limp usually means real discomfort. Common causes include bite wounds that form abscesses, torn claws, sprains, arthritis in older cats, and fractures after falls. Sudden back-leg weakness or paralysis, especially with crying and cold legs, can be a blood clot and is an emergency.
Signs to watch
- Holding up a leg or not bearing weight
- Reluctance to jump
- Swelling, heat, or a wound
- Licking a paw or leg
- Hiding or irritability
Common causes
- Bite abscesses from fights
- Torn or ingrown claws
- Sprains and soft tissue injuries
- Fractures or dislocations from falls
- Arthritis in older cats
- Nail bed infections
Go to a vet or emergency clinic right away if
- Sudden paralysis or weakness of the back legs, crying, cold paws (possible blood clot)
- An obvious fracture or dangling limb
- Limping after a fall or car accident
- Fast breathing or signs of pain elsewhere
Safe home care while you arrange a visit
- Keep your cat confined in a small room
- Check paws and claws gently for wounds
- Provide a low-sided litter box
What to avoid
- Human pain relievers, which can be fatal to cats
- Splinting or wrapping the leg yourself
Can you ask a vet online about this?
Online vet services can be helpful for deciding how urgent a problem is, getting general advice, and follow-up questions. But they have limits:
- A vet can’t examine your cat, listen to the heart and lungs, or run tests over video
- In many US states, a vet must have examined your cat in person before prescribing medication. Rules vary by state and are changing
- For any emergency sign listed above, go directly to an emergency clinic rather than waiting for an online reply
Have your cat’s age, weight, medications, and photos or video of the problem ready to make any consultation more useful.
More: abscesses in cats.
Sources
- Merck Veterinary Manual: Lameness in cats
- Merck Veterinary Manual: Abscesses in cats
- Luis Fuentes V, et al. ACVIM consensus statement guidelines for the classification, diagnosis, and management of cardiomyopathies in cats. J Vet Intern Med. 2020
This article is for general education and is not a substitute for care from your own veterinarian. Learn about The Pet Vet and our editorial policy.