Dog Dragging Back Legs: Causes and the Red Flags That Mean Vet Now

If your dog is dragging his back legs, decide one thing first: did it come on suddenly, or has it crept up over weeks? Sudden dragging, a dog that cannot stand, pain along the back or neck, or loss of bladder control is an emergency, and a ruptured spinal disc is generally thought to be a true surgical emergency, with the outlook varying significantly depending on how much function remains when the pet is examined and treated.¹ Gradual weakness still needs a vet, just not at 2am. This page walks through causes, the appointment, home care and mobility support. For the wider picture, start with back leg problems in dogs.

When dog back legs dragging is an emergency

Go now, tonight, if the dragging started suddenly or your dog cannot walk. All of these symptoms require immediate veterinary attention, and the symptom that is an absolute emergency is if the dog is unable to walk.² The same applies to crying out in pain, a hunched or arched back, no response when you touch the toes, or a dog that has stopped passing urine. Complete loss of hind limb movement usually happens at the same time as losing the ability to urinate and empty the bladder.¹

To move a dog whose back end has gone, support the body in a straight line. Place your arm under your dog's belly to support their weight when checking whether they can take a few steps.² Keep the spine level, use a flat board or stiff bed for a big dog, and avoid lifting under the chest alone.

Weakness that has built up over months is still worth an appointment this week, not next season.

Common causes of a dog dragging its back legs

Slipped disc (IVDD). Intervertebral disc disease, where the cushions between the spinal bones break down and press on the spinal cord or the nerves leaving it, is a common cause of spinal cord disorders in dogs, especially small breeds such as the Dachshund, Beagle, Shih Tzu, Lhasa Apso and Pekingese.³ Chondrodystrophoid breeds, the ones with dwarf-type short legs, account for the vast majority of all disc ruptures, with the Dachshund accounting for 45 to 70% of cases,¹ and discs in the thoracolumbar region, the mid to lower back, account for 65% of all ruptures.¹ It usually hurts. Signs include looking drunk while walking, dragging the hind legs, arching the back like a cat, avoiding jumping on furniture and trouble getting into position to poop.²

Arthritis and hip dysplasia. Hip dysplasia is an abnormal development of the hip joint in large dogs, giving a loose joint and then degenerative joint disease, that is arthritis, with lameness that is worse after exercise and sometimes a "bunny-hopping" gait.⁴ More in our guide to arthritis and a dragging back end.

Degenerative myelopathy (DM). This slow, painless breakdown of the spinal cord occurs in German Shepherds, Pembroke Welsh Corgis, Boxers, Rhodesian Ridgebacks, Chesapeake Bay Retrievers and other breeds, usually in dogs older than 8 years, who gradually start to show nonpainful incoordination and weakness of the hind limbs.³ See our guide to degenerative myelopathy.

Other causes. Fibrocartilaginous embolism (FCE) affects the spinal cord, most commonly in large-breed dogs, when a small piece of disc material enters the bloodstream and blocks the blood vessels supplying the cord, causing a rapid onset of weakness and paralysis.⁵ Tumours and infections can also affect the spine, and tick-borne illness matters too: dogs with infections such as Rocky Mountain spotted fever and ehrlichiosis sometimes show spinal cord problems from swelling in the cord.³ Degenerative lumbosacral stenosis, a narrowing of the spinal canal in the lower back, is most common in large breeds and especially German Shepherds, typically begins at 3 to 7 years and causes difficulty using the hind legs, tail weakness and incontinence.³

How to tell what you are looking at before the appointment

Watch for four things: pain, speed, symmetry and foot placement. Sudden onset with pain, such as a herniated disc causing back or neck pain and reluctance to move, points toward a disc problem, while slowly worsening, nonpainful weakness and incoordination in the hind limbs of an older dog points more toward degenerative myelopathy or an orthopedic problem like arthritis.³ Degenerative myelopathy is easily confused with arthritis, but dogs with degenerative myelopathy have difficulty sensing and placing their feet normally whereas arthritic dogs do not.³ A "drunken sailor" walk or wobbliness in the hind end, with hind feet crossing as the dog steps, is a classic early sign of disc trouble.¹ One side worse than the other is also informative: with FCE, weakness and paralysis are generally localised to one side of the body.⁶

Keep a simple diary: date symptoms started, what your dog was doing, which leg, whether nails are scuffed on top, and whether they can still pee normally. Film thirty seconds of walking on a non-slip floor from behind and from the side. A clip beats a description, and our page on reading a dog's walking clip frame by frame shows what the vet looks for. If it comes and goes rather than staying, note the pattern, as covered in back legs that give out only sometimes.

What the vet appointment involves

Expect a hands-on neurological exam first, to work out where in the spine the problem sits. That is called neurolocalization, pinpointing the site of the injury, and it lets the surgeon begin planning which tests and potential surgeries to offer.¹ In paralysed animals, it is important to determine whether pain sensation is present by pinching the toe or tail and watching whether the dog makes a behavioural response, such as a bark or turn of the head.³

Then testing. Primary care vets may suggest blood and urine tests alongside imaging,¹ and diagnosing a herniated disc requires x-rays or more detailed scans such as CT or MRI.³

Ask: where is the problem, does my dog still feel deep pain, is surgery an option and by when, what is the realistic outlook, and what should I watch for at home?

Treatment and what recovery really looks like

Treatment splits into rest-based management, surgery and rehab, and the choice depends on severity and timing. Dogs with minimal to moderate signs that can still feel pain often recover with a few weeks of rest, with medication generally used only if the dog can be cage-rested, because increased activity can push a disc further out and worsen the pressure on the cord.³ In dogs with severe neurologic signs, surgery must be performed promptly to relieve pressure on the spinal cord,³ and if surgery is delayed more than 24 hours after pain perception is lost, the chances of recovery decrease.³

Numbers help set expectations. For dogs that still perceive pain, surgery allows about 90% to regain use of their limbs, though some keep a residual wobbliness, while strict medical management allows 60 to 80% to regain function.¹ Where pain perception is completely lost, surgery allows 50 to 60% to regain limb use, compared with under 10% on strict medical management.¹ The road to recovery usually spans weeks to months,¹ and signs recur in 30 to 40% of cases.³

With or without surgery, physiotherapy is a critical part of healing and recovery, and may include acupuncture, therapeutic laser, massage, hydrotherapy and passive range of motion, gently moving the joints for the dog, to prevent loss of muscle mass.⁷ Assisted exercises, muscle stimulation and hydrotherapy on an underwater treadmill can help dogs regain strength and coordination.⁶

FCE often does: many dogs begin to show improvement within five to fourteen days, and while some recover fully it is more common to have some lasting neurological problems.⁵ DM does not: there is no specific treatment for degenerative myelopathy.³

Home care while you wait and while you recover

Make the house safe and the dog comfortable, starting today. Lay rugs or yoga mats over slick floors, block the stairs and use a ramp instead, and keep walks short, flat and on-lead. Trim nails often so dragging toes have less to catch on, and use booties or a paw-protecting sock on scuffed tops of feet.

Switch the lead attachment point. All affected dogs should be fitted with a harness instead of a neck collar, with activity limited early in recovery,⁷ and lifestyle changes may include weight loss, switching to a body harness instead of a neck lead, and minimising jumping off furniture.¹

If your dog cannot pee on their own, your vet will show you how to help. Owners need to express the bladder, pressing gently to empty it, several times a day, and these dogs are at higher risk of chronic urinary tract infections and urine scald, where urine irritates the skin.¹ Protect the skin: without movement, patients cannot turn themselves and may develop bed sores, so keeping them on a soft, well padded area helps minimise these wounds.¹ Supportive care also includes frequent repositioning and assisting mobility with slings or harnesses.⁵

When a rear support wheelchair is the right call

A rear support cart is right once your dog has a diagnosis and a front end strong enough to pull, whether that is during rehab or for the long term. If the dog's front limbs are strong enough, the vet may recommend a mobility device like a cart to help your dog get around.² It is not giving up on walking. Using assistive devices such as a lightweight harness with a handle, a fabric sling or a walking cart can help healing and an early return to mobility,⁶ and once other causes of weakness have been ruled out, activity should be encouraged to prevent or minimise muscle wasting.⁶ That is why carts often come up earlier in the conversation than owners expect.

The OldPal Rear Support Dog Wheelchair is built for dogs with weak or failing back legs. The padded harness carries weight through the hips and chest rather than the spine, every strap adjusts, and the frame is set so the back legs hang free or lightly brush the ground. Dogs can squat and go to the bathroom while in the chair. The frame is lightweight aluminium with all-terrain wheels, in five sizes covering rear leg heights from 3 to 27 inches.

Sizing uses one measurement: rear leg height, from the top of the hip straight down to the toe pad, with your dog lying on their side and the leg at its natural bend. Use the fit finder and measuring guide, or email a photo and your measurement to help@oldpalpets.com and a person will check it. If the size is wrong, our Fit Guarantee lets you exchange the frame for the one that fits. Mini, Small and Medium arrive within 1 to 2 weeks, Large and XL within 2 to 3 weeks, shipping to the continental US.

Introduce the cart in short sessions on flat ground, five or ten minutes with treats, then build up. Always supervise, take the chair off for rest, meals and crate time, and check the harness contact points for rubs.

What not to do

• Do not let your dog keep dragging on concrete, decking or tile. Paws abrade fast.
• Do not push through pain or "walk it off".
• Do not wait out sudden paralysis overnight.
• Do not lift under the chest with a strap that rides into the armpits or presses the throat.
• Do not buy equipment before you have a diagnosis.

Living well long term

Keep muscle, keep weight down, keep checking. Getting the dog to a healthy weight and maintaining it helps recovery and an active lifestyle.⁷ Book a recheck if the dragging worsens, spreads to the front legs, becomes painful, or bladder and bowel control changes.

Frequently asked questions

Related guides

• Dog dragging back legs: causes, care and next steps
• Caring for a dog with weak back legs
• When a dog suddenly cannot walk

Sources