Lameness is one of the most common reasons dogs see a vet, and the cause ranges from something you can remove in ten seconds to something that needs surgery.
Here is how to narrow it down.
Go to the vet immediately if
- The leg is hanging, dragging, or clearly deformed
- Your dog cannot bear any weight at all on the leg
- There is obvious swelling, heat, or a wound
- The limp followed a car accident, a fall, or a fight
- Your dog is in evident severe pain — crying, trembling, panting, refusing to be touched
- There is swelling with fever or lethargy
- Your dog is a puppy with sudden severe lameness
- Multiple legs are affected, or the lameness shifts from leg to leg
- There is a wound near a joint, which risks a septic joint
Otherwise, a mild limp in a bright dog can reasonably be assessed at home first.
The home check
Do this calmly, with your dog standing or lying comfortably. If your dog is in real pain, muzzle first — pain makes any dog bite.
- Watch them walk on a hard flat surface, away from you and back. Film it. Note which leg is short-striding, and whether the head bobs up when a front leg lands
- Start at the foot. Check between every toe and the pads for a thorn, a stone, glass, a grass seed, or a split nail. This accounts for a large share of sudden limps
- Check the nails, including dew claws, which grow into the pad if neglected
- Feel up the leg slowly, comparing to the other side. Look for heat, swelling, or a flinch
- Flex and extend each joint gently. Note anything your dog resists
- Check the pad for burns in hot weather — hot pavement causes blistering
If you find a thorn or a small cut, remove it if easy, clean with saline, and watch. If the limp resolves within a day, that was it.
Rest and reassess
For a mild limp with no red flags:
- Strict rest for 48 hours. Lead-only toilet trips, no stairs, no jumping, no play
- Soft bedding
- No painkillers from your own cupboard — human NSAIDs and paracetamol are dangerous to dogs
If it has not clearly improved in 48 hours, or worsens at any point, book an appointment.
What vets see most often
Soft tissue strain. The most common cause of a short-lived limp. Usually resolves with rest.
Cruciate ligament rupture. The commonest orthopaedic problem in dogs. Typically a sudden hind-leg lameness, often after turning at speed, sometimes with a partial tear that improves and then relapses. Look for a dog who sits with the leg kicked out to the side and who toe-touches rather than bearing weight. Most cases need surgery, and around half of dogs go on to rupture the other side.
Osteoarthritis. Stiffness after rest that eases with movement, in a middle-aged or older dog. Often both sides, so the dog does not limp obviously — they just slow down.
Hip or elbow dysplasia. Young, growing, usually larger breeds. Bunny-hopping gait, difficulty rising, reluctance to exercise.
Luxating patella. Small breeds especially. A characteristic skip — the dog hops for a few steps with a hind leg held up, then carries on normally as the kneecap slips back.
Panosteitis. Growing pains in large-breed adolescents. Lameness that shifts between legs, self-limiting but genuinely painful.
Foreign body, usually a grass seed. Sudden lameness with persistent licking between the toes, often with a small swelling. Seasonal, and it migrates if left.
Nail bed infection or a split nail. Very painful, often with licking and a strong smell.
Bone tumour. The one nobody wants to think about, and the reason persistent lameness in a large or giant breed deserves imaging rather than another month of rest. Typical picture: a large-breed middle-aged or older dog, lameness that worsens rather than improves, often with swelling near the shoulder, wrist or knee. Early diagnosis matters.
Tick-borne disease. In endemic areas, a shifting lameness with fever and lethargy can be Lyme disease or anaplasmosis.
Immune-mediated polyarthritis. Multiple joints, fever, reluctance to move. Uncommon but treatable once diagnosed.
What to tell your vet
- Which leg, and when it started
- Sudden or gradual
- Better or worse after rest, and after exercise
- Constant or intermittent
- Any known incident
- Whether it shifts between legs
- What you have already tried
- A video. Film your dog walking towards and away from the camera on a hard surface. It is by far the most useful thing you can bring, because many dogs are too excited in a consulting room to show a mild lameness
What not to do
- Do not give human painkillers. Ibuprofen and paracetamol cause serious harm
- Do not massage or manipulate a swollen limb
- Do not apply heat to a fresh injury
- Do not “walk it off”. Continued exercise on a partial ligament tear converts it into a complete one
- Do not wait weeks. Persistent lameness is rarely nothing, and several of the causes above get worse with delay
