Dog Knuckling Paws: What It Means & When to Seek Help
Knuckling is when a dog places a paw with the top of the foot against the ground, or the paw folds under instead of landing normally. It can be a sign that the nervous system is not controlling or sensing paw position normally. IVDD is one possible spinal cause, but knuckling is not a diagnosis by itself.12
What does knuckling look like?
The paw folds under
The dog places weight on the top of the paw instead of the pads, or does not immediately correct an abnormal paw position.
Scuffed nails or skin
The tops of the toes, nails or paw may scrape along the floor because the foot is not clearing the ground normally.
Stumbling or crossing the legs
Knuckling can occur alongside wobbliness, poor coordination, crossing of the limbs or repeated stumbling.
Dragging or worsening weakness
Some dogs may progress from occasional incorrect paw placement to more obvious scuffing, dragging or difficulty standing.
Why knuckling matters
Veterinary neurological examinations assess gait, paw placement and other postural responses alongside reflexes, pain and strength. These findings help the veterinary team work out whether a gait change is neurological and where a problem may be located.13
Is knuckling a sign of IVDD?
It can be. Dogs with spinal cord disease, including acute intervertebral disc extrusion, can develop proprioceptive ataxia, weakness and loss of coordinated limb control. However, other neurological, spinal and orthopaedic problems can also change the way a dog places its paws, so an examination is needed before attributing knuckling to IVDD.23
What to do now
- Prevent jumping, stairs and unnecessary walking until you have veterinary guidance.
- Reduce slip and fall risks and support your dog carefully when moving them.
- Contact your vet and explain when the knuckling started, which limb or limbs are affected and whether it is worsening.
- If it is safe, take a short video of your dog’s natural gait to show the veterinary team rather than repeatedly testing the paw.
- Tell the vet immediately about loss of walking, severe pain or any change in urination.
What not to do
Do not repeatedly flip the paw over to “test” it, force extra walking to see whether it improves, start rehabilitation exercises before the cause is understood, or pinch the toes to try to test deep pain sensation. Deep pain assessment is a veterinary neurological test and should not be attempted at home.
Protecting the paw is not treating the cause
Boots, socks or toe-protection products may sometimes help reduce abrasion, but they do not treat the neurological problem causing abnormal paw placement. Use protective products only when they are appropriate for your dog and do not allow them to delay veterinary assessment.
What may happen at the vet
The veterinary team may observe your dog walking, assess limb strength and coordination, check postural responses and reflexes, and examine the spine for pain. The findings help determine whether imaging, specialist referral or other tests are appropriate.13
Related next steps
Frequently asked questions
What does knuckling mean in a dog?
It describes abnormal paw placement where the paw folds under or the dog bears weight on the top of the foot. It can occur when normal neurological control or awareness of paw position is disrupted.
Is knuckling always IVDD?
No. IVDD is one possible cause, but other neurological, spinal and orthopaedic conditions can produce abnormal paw placement.
Is dog knuckling an emergency?
New knuckling warrants veterinary advice. It becomes particularly urgent when it is sudden or worsening, or occurs with inability to walk, severe pain, urinary difficulty or involvement of several limbs.
Should I keep flipping my dog’s paw to test it?
No. If safe, a short video of the natural gait can be useful for your vet. Repeated home testing can confuse the picture and painful neurological tests should be left to a veterinary professional.
- Griffin JF, Levine JM, Kerwin SC. Canine thoracolumbar intervertebral disk disease: pathophysiology, neurologic examination, and emergency medical therapy. PubMed.
- Olby NJ et al. ACVIM consensus statement on diagnosis and management of acute canine thoracolumbar intervertebral disc extrusion. PubMed Central.
- Assessment of orthopedic versus neurologic causes of gait change in dogs. PubMed.
This page is educational and cannot diagnose the cause of knuckling. New or worsening neurological signs should be assessed by a veterinary professional. Do not perform painful neurological or deep-pain tests at home.