Why Is My Dog Limping? Nine Causes, and the Warm-Up Test That Sorts Them

Written by Marc Brannigan, Co-Founder & CEO of HempMy Pet. Last updated 19 October 2026.

Question One: Can They Put Weight On It?

This is the fastest triage there is, and it takes ten seconds of watching them walk across a room.

Question Two: The Warm-Up Test

This is the single most useful thing an owner can observe at home, and almost no article on this question mentions it.

Watch your dog for the first thirty seconds after they have been lying down for an hour or more. Then watch them again after twenty minutes of gentle movement. The direction the limp moves tells you which family of causes you are looking at.

• Worse on rising, eases with movement. The classic degenerative-joint pattern — arthritis, hip or elbow dysplasia, an old injury that has changed the joint. Stiff after rest, loosens up on the walk, stiffens again after. Usually gradual over months, usually worse in cold weather, usually both sides even if one looks worse.
• Fine on rising, worse after activity. Points at soft tissue — a strain, a sprain, a partially torn ligament, an overworked muscle. Often traceable to a specific day: a long run, a slip on wet decking, an over-enthusiastic game of fetch.
• Worse in both, and getting worse week on week. This is the group that needs a vet with an x-ray machine rather than a rest plan. Progressive lameness in one limb, particularly in a large-breed dog and particularly with any swelling, gets investigated properly.
• Comes and goes with no pattern at all. Often a kneecap that slips in and out of place, especially in small breeds — the dog skips a step, then carries on normally. Also seen in early cruciate disease and in young growing large-breed dogs.

The Nine Causes, Side by Side

The middle column is what you see. The right column is the tell.

Two can be true at once. An arthritic dog who also stands on a thorn will look dramatically worse than either problem alone.

Dog Not Putting Weight on a Back Leg?

A back leg narrows the list. How much weight the dog takes on it narrows it again.

The cruciate tear deserves its own warning. The American College of Veterinary Surgeons calls cruciate disease one of the most common reasons for hind limb lameness in dogs. Its main signs are trouble rising from a sit, trouble jumping into the car and lameness that shows after rest. It also reports that 40% to 60% of dogs with it in one knee eventually develop it in the other. A partial tear often improves with a week of rest and then comes back, which is why a back-leg limp that keeps returning should be examined rather than waited out. Labradors, Rottweilers, Newfoundlands, Mastiffs and overweight dogs are over-represented.

A dog who is not crying is not necessarily a dog who is not hurting. Dogs mask pain well, and refusing to bear weight is itself a pain sign. If the leg does not touch the ground, go by the leg, not the noise.

"He Limps Sometimes and Not Others"

One of the most-searched versions of this question, and it has a real answer rather than a shrug.

An intermittent limp almost always means one of four things. A kneecap that slips gives a brief skip and then normal walking. A partial cruciate tear improves with rest and returns with activity, in a cycle that repeats over weeks. Arthritis looks intermittent because it is genuinely worse at particular times — after rest, in the cold, the morning after a big walk. And a grass seed or small foreign body can shift position and hurt only at certain angles.

What it almost never means is that your dog is imagining it or being dramatic. Intermittent does not mean minor. A partial cruciate tear that comes and goes for three months usually becomes a complete tear, and it is far easier to deal with before that happens.

Is My Dog Faking a Limp?

Very occasionally, and the test is straightforward.

Dogs can learn that limping produces attention, and a small number genuinely will favour a leg that has healed because the behaviour was rewarded. But this is rare, it only happens after a real injury that was heavily fussed over, and it has a distinctive signature: the limp appears when you are watching and disappears when the dog thinks they are alone.

Film them through a doorway, or ask someone to watch them in the garden while you stay inside. If the limp persists when nobody is looking, it is real. If the limp switches legs, that is a medical sign rather than an acting one — shifting lameness points at infection or immune-mediated joint disease, not theatre. Assume it is real until you have actually watched them unobserved.

How Long Should a Limp Last?

Useful numbers, with the honest caveat that they are guidance, not a diagnosis.

• A minor strain or sprain should look clearly better within 24 to 48 hours of real rest, and be largely resolved within a week to ten days.
• No improvement at all after 48 hours of rest is the line at which "wait and see" stops being reasonable. Book the appointment.
• Any limp lasting more than two weeks, even a mild one, needs a proper look. Chronic low-grade lameness is how cruciate disease and early arthritis present.
• A limp that improves and then returns when activity resumes is a pattern, not a coincidence. That is the partial-tear cycle, and each round does more damage.

Real rest means lead-only toilet breaks, no stairs, no jumping on or off furniture, no off-lead running and no ball. Two days of that is worth two weeks of "taking it easy" in the normal sense.

Where Hemp Actually Fits — and Where It Doesn't

Of everything on this page, this is the one topic where the canine research is genuinely strongest rather than weakest — so it is worth being precise about the boundary.

It has no role in an acute limp you have not had looked at. A dog who cannot bear weight, a dog who is dragging a leg, a suspected fracture, a fresh injury, a progressive swelling — none of those are supplement situations, and giving something that makes a dog more comfortable before a diagnosis can mask exactly the signal your vet needs. Get the answer first.

Where it belongs is the long-term joint-comfort conversation, after a diagnosis, alongside the things that matter more: keeping your dog lean, controlled regular exercise rather than weekend bursts, non-slip flooring, a ramp instead of a jump, and whatever your vet has prescribed.

Our own interest in this is not academic. HempMy Pet ran a 90-day study of 37 dogs with chronic joint discomfort, overseen by Dr. Robin Downing, DVM of the Downing Center for Animal Pain Management with Lori Kogan, Ph.D. and Peter W. Hellyer, DVM of Colorado State University's College of Veterinary Medicine. Of the 32 dogs that completed it, 30 showed a benefit, and 94% of owners reported improved quality of life. You can read what was measured, and what it does and does not establish, on our clinical trials page. If your dog's answer turns out to be arthritis specifically, our guide to hemp for dogs with arthritis goes deeper, and our guide to the signs and stages of arthritis covers what the international consensus guidelines actually recommend at each stage.

How it is given matters. Joint comfort is a daily, cumulative thing rather than a dose you give on a bad day — most owners give it consistently and judge it over two to four weeks, not two to four hours. Our serving guide works from body weight and has a calculator that converts milligrams into drops for the bottle you actually own.

Shop Hip & Joint Mobility → See Serving by Weight

If your dog takes any prescription medication — and a limping dog often will — talk to your vet before adding hemp, because it can change how quickly the body clears other drugs. We cover that, and the published safety findings, in hemp and CBD side effects in dogs.

What You Can Do at Home

Assuming you have ruled out the emergency group, roughly in the order worth doing.

• Check the foot properly. Between every toe, the pad, the nails, the webbing. Good light. It is the single most common cause and it takes two minutes.
• Rest it for real. Lead-only toilet breaks, no stairs, no sofa, no ball, no off-lead. Forty-eight hours. Most minor strains declare themselves in that window.
• Do not give human painkillers. Ibuprofen, naproxen and paracetamol are genuinely dangerous to dogs. Nothing from your own cupboard, ever.
• Cold, then warm. For a fresh knock, a cold pack wrapped in a towel for ten minutes can help in the first day or two. For a stiff arthritic joint, gentle warmth before a walk helps more. Never apply either directly to skin.
• Fix the floors. Runners on laminate and tile do more for a wobbly older dog than most products do. Slipping is how mild arthritis becomes an acute injury.
• Weigh them. Being lean is the most effective thing available for a dog with joint problems and it costs nothing. A few pounds is a lot on a dog.
• Film the walk. Thirty seconds from behind and thirty from the side, on a hard floor. Limps are often intermittent and vanish in the consulting room; video is worth more than your description.

When to See Your Vet

Today, urgently, if:

• They will not put the leg down at all
• They are dragging a limb, knuckling over, or cannot use both back legs
• The leg is visibly swollen, hot, or at a wrong angle
• There was trauma — a car, a fall, a fight
• They are crying out, shaking, panting heavily, or will not let you near the leg
• There is a deep wound, a puncture, or a nail torn out at the base

Book an appointment if:

• No improvement after 48 hours of genuine rest
• Any limp lasting more than two weeks, however mild
• The limp keeps coming back each time exercise resumes
• The lameness moves from one leg to another
• There is a firm swelling anywhere on a limb, particularly in a large breed
• Your dog has quietly stopped doing stairs, jumping into the car, or getting on the sofa

For veterinary background, the Cornell Riney Canine Health Center covers canine orthopaedic conditions, and PetMD has a veterinarian-reviewed owner summary of limping causes.

Frequently Asked Questions

What should I do if my dog is limping?
Watch them walk and decide whether they can bear weight. If the foot never touches the ground, or they are dragging the limb, go to a vet today. If they are using the leg but favouring it, check the paw thoroughly, then rest them properly — lead-only toilet breaks, no stairs, no jumping, no ball — for 24 to 48 hours. Most minor strains improve clearly in that window. No improvement after 48 hours means an appointment. Never give human painkillers.

What to do if a dog can't put weight on its back leg?
Check the paw, pads and nails gently for a thorn, cut or torn nail. If you find nothing and the foot still will not touch the ground, see a vet the same day, because a fracture, dislocation or complete cruciate tear is likely. Until then, keep the dog confined and still, carry them on stairs, and do not give any human painkiller. If they are dragging the leg or weak in both back legs, it is an emergency.

Why is my dog suddenly limping on a back leg but not crying?
Because dogs hide pain well, and a dog that will not put weight on a leg is already showing pain. The most common cause of a sudden back-leg limp without crying is a cruciate ligament tear in the knee, often after running, jumping or a slip. A thorn or torn nail and a kneecap that has slipped out are the other usual causes. A limp that does not clearly improve within 48 hours of strict rest needs a vet.

How do I tell if my dog's back leg is sprained?
A sprain usually follows a specific moment you can name, the dog still puts some weight on the leg, there is little or no swelling, and it is clearly better after 48 hours of real rest. If the dog will not touch the foot down, sits with the leg kicked out to the side, or improves and then relapses, it is more likely a cruciate tear than a sprain, and only a vet examining the knee can tell the two apart.

Why does my dog limp sometimes and not others?
Intermittent limping usually means one of four things: a kneecap that slips in and out of place, which gives a brief skip then normal walking; a partial cruciate tear, which improves with rest and returns with activity in a repeating cycle; arthritis, which is genuinely worse after rest and in cold weather; or a small foreign body such as a grass seed that hurts only at certain angles. Intermittent does not mean minor — a partial cruciate tear that comes and goes usually becomes a complete one.

How can I tell if my dog is faking a limp?
Watch them when they do not know you are watching. A learned limp appears when the owner is present and disappears when the dog believes they are alone. Film them through a doorway or have someone observe from a distance. If the limp persists unobserved, it is real. If it switches legs, that is a medical sign rather than an acting one. Faked limps are rare and only follow a real injury that was heavily fussed over.

How long will a dog limp with a sprained leg?
A genuine minor sprain should look clearly better within 24 to 48 hours of strict rest and be largely resolved within a week to ten days. If there is no improvement at all after two days, or the limp is still present at two weeks, it is not a simple sprain and needs a proper examination. A limp that resolves and then returns as soon as exercise restarts suggests a ligament injury rather than a strain.

Should I walk my dog if they are limping?
No, beyond short lead-only toilet breaks. Exercising a limping dog turns a partial tear into a complete one and a hairline fracture into a displaced one. Real rest means no stairs, no jumping on or off furniture, no off-lead running and no ball, for at least 48 hours. If your dog needs mental stimulation during that time, use scent games and food puzzles rather than walks.

Can I give my dog human painkillers for a limp?
No. Ibuprofen, naproxen and paracetamol are genuinely dangerous to dogs and cause stomach ulceration, kidney damage and worse. Aspirin is also not appropriate without veterinary direction and complicates any medication your vet may want to start. If your dog is painful enough that you are reaching for the cupboard, that is the signal to call the practice, not to self-medicate.

My dog is limping but does not seem to be in pain. Is that possible?
Dogs hide pain well, and a limp is itself a pain signal — the limp is how the dog avoids the pain, so a comfortable-looking dog may simply be compensating successfully. Look instead at what they have stopped doing: stairs, the car, the sofa, greeting you at the door. Quiet withdrawal from normal activities is the most reliable pain sign in dogs, and it is easy to mistake for aging.

Can hemp or CBD help a limping dog?
It has no role in an undiagnosed acute limp, and giving it before a diagnosis can mask the signal your vet needs — get the answer first. Where it belongs is the long-term joint-comfort conversation after a diagnosis, alongside keeping the dog lean, controlled regular exercise, non-slip flooring and whatever your vet prescribes. Joint comfort is where the controlled canine research on CBD is strongest, including a 90-day study HempMy Pet ran with veterinarians from Colorado State University, and it is a daily cumulative approach judged over weeks rather than hours.

The Short Version

Two observations do most of the work. If the leg cannot take weight at all, or the dog is dragging it, that is today's problem — go now. If they are favouring it, check the foot, then rest them properly for 48 hours and watch which way the limp moves.

Worse on rising and better with movement means worn joints. Fine on rising and worse after exercise means an injury. Getting worse in both means imaging. And a limp that keeps coming back is a pattern worth taking seriously before it becomes a bigger repair.

Shop Hip & Joint Mobility → All Hemp for Dogs

Arthritis in Dogs: Signs & Stages · What Can I Give My Dog for Pain? · Hemp for Dogs with Arthritis · Our Clinical Trials · Night-Time Restlessness · Serving by Weight · Best Joint Supplements for Dogs · Dasuquin vs Cosequin

These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease. This article is general information, not veterinary advice. If your dog is unwell, contact your veterinarian.