Why Is My Dog Limping? A Burlington Vet on Causes and When It’s Urgent

The call usually starts the same way. A dog was fine at breakfast, then trotted in from the backyard holding up a paw.

Sometimes it’s a Saturday and the family just got home from a walk along the waterfront. Sometimes the dog is eleven and simply took the stairs a little slower this week.

We hear this one every day at our front desk. A limp is unsettling because it shows up fast, and your dog can’t tell you what happened.

A limp isn’t a diagnosis on its own. According to the Merck Veterinary Manual, lameness is a sign of illness, not a specific disease, and it usually points to a problem in the muscles, bones, or joints. Your job is to notice it early. Ours is to find the cause.

If this is happening right now and your dog suddenly can’t bear any weight, is dragging a limb, has an obviously swollen or bent leg, or is in visible distress, call us at (905) 336-4002. After hours, use our after-hours care guidance or your nearest emergency veterinary hospital. If you suspect a toxin is involved, the Pet Poison Helpline is available at 855-764-7661.

Why is my dog limping but not crying or showing pain?

Dogs often limp without making a sound. According to the Merck Veterinary Manual, lameness shows up as altered weight bearing, a shortened stride, stiffness, or a reluctance to move, not necessarily as crying. Many dogs hide discomfort well, so a quiet limp still deserves a look.

Dogs are stoic by design. Many hide pain well, and that instinct runs deep even in the Labrador snoozing on your kitchen floor.

So a missing yelp doesn’t mean nothing is wrong.

This matters most with slow-building problems. A ligament in the knee can weaken gradually, and a peer-reviewed veterinary review notes that cruciate rupture often develops from that kind of degeneration rather than one sharp injury.

That’s why a dog can start favouring a leg with no dramatic moment to blame.

Why is my dog suddenly limping on a back leg?

A sudden back-leg limp with no clear accident often traces to the knee. A peer-reviewed veterinary review reports that cranial cruciate ligament rupture, the dog version of a torn ACL, is one of the most common orthopaedic problems in dogs, and it frequently develops from gradual ligament degeneration rather than one dramatic injury.

How common is it? That same review reports a prevalence of about 11% among dogs referred to twenty-seven North American hospitals.

Age and breed shift the odds. The review notes cruciate injury is most common between 2 and 10 years of age, with dogs under 4 more likely to suffer a traumatic tear and dogs aged 5 to 7 more prone to gradual degeneration, and it lists Labradors, Rottweilers, Boxers, and Bulldogs among predisposed breeds.

A sudden back-leg limp is worth an exam rather than a wait-and-see week.

Why is my dog limping after rest or first thing in the morning?

A dog that’s stiff getting up, then loosens once moving, is showing a classic pattern of joint wear. The Merck Veterinary Manual lists lameness, joint swelling, and muscle wasting among the signs of osteoarthritis, the degenerative joint disease behind most chronic limps in older dogs.

Cold mornings on hardwood floors bring these dogs in. An older dog rises slowly, hobbles the first few steps, then seems to warm out of it by the time the kettle’s on.

That loosening-up pattern is one we hear described at the front desk a lot. The Merck Veterinary Manual explains that joint degeneration can follow trauma, infection, the immune system, or a malformation that was there from puppyhood.

Managing it is a long game, not a quick fix. The Merck Veterinary Manual describes weight loss when it’s needed, controlled exercise on soft surfaces, and warm compresses, alongside anti-inflammatory medication.

Those medications help, but they aren’t hands-off. The Merck Veterinary Manual notes that long-term NSAID use in dogs can cause gastrointestinal problems, which is exactly why the dose and choice should come from us.

Keeping a dog lean takes real pressure off sore joints, and our team can help you build a weight plan that fits an older dog.

Can Lyme disease cause limping in dogs?

Yes, and in Halton it’s worth taking seriously. The Merck Veterinary Manual describes a limp that shifts from one leg to another, along with swollen or painful joints, as a classic sign of Lyme disease in dogs. Halton Region Public Health notes that all of Halton is an established blacklegged tick risk area.

Late-summer trail season is also peak tick season around here. Dogs that romp through Bronte Creek, the Bruce Trail lands along the Niagara Escarpment, or the wooded stretches of Conservation Halton parks brush right past tick habitat.

Halton Region Public Health describes that habitat as wooded or brushy areas with tall grass and foliage close to the ground. It also confirms that in Ontario, blacklegged ticks are the only ticks known to carry the bacteria behind Lyme.

Timing works in your favour if you’re quick. The Merck Veterinary Manual notes the deer tick usually needs to stay attached for 1 to 2 days to pass on the infection, and Halton Region adds that removing a tick within 24 hours keeps the risk extremely low.

The catch with Lyme is the delay. A shifting-leg limp can show up well after the walk that caused it, so a tick check after every outing and year-round prevention matter more than most owners expect.

Not on a prevention plan yet? Ask us at your next wellness visit.

Should I take my dog to the vet for limping, or wait?

Some limps can be watched for a short while; many shouldn’t. Because the Merck Veterinary Manual describes lameness as a sign that needs to be diagnosed, and controlling pain can speed recovery, the safest approach is to call us and describe what you’re seeing rather than guess.

We’d always rather hear from you early. A quick phone call helps us sort a minor tweak from something that needs same-day care.

When the exam raises questions, imaging fills the gaps. The Merck Veterinary Manual notes that vets commonly use x-rays and ultrasound, and sometimes CT or MRI, to find the source of a limp, and our team can walk you through it on our diagnostics page.

There’s one more reason not to wait, and it’s comfort. The manual points out that relieving pain is an important part of treating a lame dog and can help it recover faster.

Is a limping dog an emergency?

Not every limp is a 911 moment, but some are. Call us the same day if your dog won’t put any weight on a leg, has a swollen or oddly angled limb, seems to be in severe pain, or also has a fever. When in doubt, phone us before you wait it out.

Most limps aren’t life-threatening. A few signs, though, move a limp straight to the front of the line.

The Merck Veterinary Manual lists fever, low energy, and swollen or painful joints among the signs of Lyme, so a limp with those deserves prompt attention too.

Trust your read of your own dog. You know what normal looks like for them, and a big change from that is reason enough to call.

Why is my dog holding up one paw or not putting weight on a leg?

A held-up paw is your dog keeping weight off a leg. The Merck Veterinary Manual offers a clue for finding the sore spot: dogs tend to raise the head when weight lands on a sore front leg and drop the head when weight lands on a sore back leg, with a shorter stride on the painful side.

A lifted paw is worth a calm, gentle look. Check between the toes and pads for a burr, a cut, a broken nail, or a bit of trail grit, the way you’d check your own foot for a stone.

If nothing obvious turns up, the limp is likely coming from deeper in the leg. Resist the urge to press, stretch, or test the joint yourself, and let us take a look instead.

You don’t need to name the cause to call us; a short exam usually narrows it down quickly.

Here’s a quick reference for the patterns we see most, and what each can point to:

Frequently asked questions

Can a dog’s limp heal on its own?

Some mild limps from a minor strain do settle with rest. The trouble is telling those apart from a cruciate injury or early arthritis, which won’t. Because the Merck Veterinary Manual calls lameness a sign that needs diagnosing, it’s safest to have us check a limp that lasts more than a day or two.

How long should a dog limp before I worry?

A brief limp that clears within a few minutes is less concerning than one that lingers. If a limp is still there the next day, keeps coming back, or gets worse, call us at (905) 336-4002. A dog that won’t bear any weight on a leg shouldn’t wait at all.

Should I give my dog pain medication meant for people?

Please call us before giving your dog any medication. The Merck Veterinary Manual notes that even long-term NSAID use in dogs can cause stomach and intestinal problems, so the safest step is to let us recommend something once we know what’s causing the limp. A quick call is always the right first move.

Can I keep walking my dog while it’s limping?

Ease off until we’ve seen the leg. Until we know the cause, it’s safest not to push a limping dog through its usual walk. For dogs with arthritis, the Merck Veterinary Manual suggests controlled exercise on soft surfaces rather than hard pavement, so check with us before your next trail walk.

Does a limp always mean a broken bone?

No. Breaks are just one possibility. A limp can come from a torn ligament, arthritis, a tick-borne illness like Lyme, a cut pad, or a sore muscle. The Merck Veterinary Manual describes lameness as a sign of many possible musculoskeletal problems, which is why an exam and imaging matter.

How do vets figure out what’s causing a limp?

We start with a hands-on exam and watch how your dog moves. From there, the Merck Veterinary Manual notes that veterinarians commonly use imaging such as x-rays and ultrasound, and sometimes CT or MRI, to pinpoint the cause. That’s how a general limp becomes a specific, treatable diagnosis.

This article is educational and isn’t veterinary advice or a substitute for an exam. If you’re worried about your pet right now, call us at (905) 336-4002 or your nearest emergency veterinary hospital.

A limp is your dog telling you something changed, and you don’t have to sort it out alone. Our team on Brant Street is happy to take a look and help you find the cause.

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Sources

Veterinary manuals and clinical references

1. Merck Veterinary Manual (Dog Owners) – Lameness in Dogs. https://www.merckvetmanual.com/dog-owners/bone-joint-and-muscle-disorders-of-dogs/lameness-in-dogs
2. Merck Veterinary Manual – Overview of Lameness in Small Animals. https://www.merckvetmanual.com/musculoskeletal-system/lameness-in-small-animals/overview-of-lameness-in-small-animals
3. Merck Veterinary Manual (Dog Owners) – Osteoarthritis (Degenerative Joint Disease). https://www.merckvetmanual.com/dog-owners/bone-joint-and-muscle-disorders-of-dogs/osteoarthritis-degenerative-joint-disease
4. Merck Veterinary Manual (Dog Owners) – Lyme Disease (Lyme Borreliosis) in Dogs. https://www.merckvetmanual.com/dog-owners/disorders-affecting-multiple-body-systems-of-dogs/lyme-disease-lyme-borreliosis-in-dogs
5. Cranial Cruciate Ligament Rupture in Dogs: Review on Biomechanics, Etiopathogenetic Factors and Rehabilitation (peer-reviewed, NCBI/PMC). https://pmc.ncbi.nlm.nih.gov/articles/PMC8472898/

Local public health

1. Halton Region Public Health – Lyme Disease and Other Tick-Borne Diseases. https://www.halton.ca/for-residents/immunizations-preventable-disease/diseases-infections/lyme-disease