Why is my dog limping?

Paw and nail injuries are among the most common causes of sudden limping in dogs. A torn or broken nail can bleed significantly and cause considerable pain. Cuts or abrasions on the paw pad from rough surfaces, glass, or sharp objects can also cause immediate lameness.

Foreign objects between the toes — thorns, foxtails, pebbles, or splinters — can cause persistent discomfort, licking of the affected paw, and intermittent limping that worsens with activity. In some cases, the object becomes embedded and can lead to infection if not removed.

While minor paw injuries can sometimes be managed at home with cleaning and bandaging, a veterinary evaluation is recommended if bleeding is heavy, the wound appears deep or infected, or if your dog continues to limp after a day of rest. A torn nail, in particular, may benefit from professional trimming and bandaging to prevent further splitting and infection.

Soft tissue injuries — sprains (ligament injuries), strains (muscle or tendon injuries), and muscle tears — are common in active dogs. These injuries can occur during vigorous play, running, jumping, or awkward landings. The onset of limping is often sudden and may be accompanied by mild swelling.

Mild sprains and strains often improve with rest, restricted activity, and time. However, more significant injuries may not resolve with rest alone and can worsen if the dog continues to exercise on the injured limb. A veterinary evaluation helps determine the severity of the injury and whether imaging or additional treatment is needed.

If your dog is limping after a specific incident and the lameness does not improve within 24 to 48 hours of rest, or if swelling increases or your dog becomes more painful, a veterinary examination is recommended. X-rays may be needed to rule out a fracture or other bony injury.

The cranial cruciate ligament (CCL) stabilizes the knee joint in dogs — equivalent to the ACL in humans. A tear in this ligament causes sudden hind limb lameness, often with visible swelling around the knee. Dogs with a CCL tear typically hold the affected leg up or touch only the toes to the ground.

CCL tears are one of the most common orthopedic injuries in dogs and can occur during normal activity, especially in overweight dogs, those with poor muscle tone, or breeds predisposed to ligament weakness. Some dogs tear the ligament gradually over time, while others experience a sudden, complete rupture during exercise.

A CCL tear generally does not heal on its own and typically requires surgical intervention to restore stability to the knee. Without treatment, the joint continues to deteriorate, arthritis progresses, and the opposite knee is at increased risk of injury. If your dog suddenly stops bearing weight on a hind leg, a prompt veterinary evaluation — including X-rays and an orthopedic exam — is recommended.

Patellar luxation occurs when the kneecap (patella) slips out of its normal groove on the femur. It is one of the most common orthopedic conditions in dogs, particularly in small and toy breeds such as Chihuahuas, Yorkshire Terriers, Pomeranians, and miniature poodles.

Signs of patellar luxation include intermittent limping, a sudden "skip" in the dog's gait, holding the leg up briefly before using it normally again, and in severe cases, persistent non-weight-bearing lameness. Some dogs learn to extend the knee to pop the kneecap back into place, which may appear as a brief hopping motion.

Mild patellar luxation may be managed with weight management and joint supplements, while more severe or frequent luxations may require surgical correction. An orthopedic evaluation, including a physical exam and X-rays, helps determine the grade of luxation and the most appropriate course of action.

Fractures in dogs can result from falls, being hit by a vehicle, rough play, or trauma. A fractured bone typically causes immediate, severe lameness — the dog will usually refuse to bear weight on the affected limb and may cry out in pain. Visible deformity, swelling, and crepitus (a grinding sensation) may also be present.

Fractures are medical emergencies that require prompt veterinary attention. Treatment depends on the location and severity of the fracture and may include splinting, casting, or surgical repair with pins, plates, or screws. Early treatment improves the likelihood of a good recovery and helps minimize pain.

If you suspect your dog has a fracture, it is important to minimize movement of the affected limb and seek veterinary care as quickly as possible. Do not attempt to splint or manipulate the limb yourself, as this can cause additional pain and injury. Keep your dog calm and transport them to a veterinary facility for evaluation and treatment.

Osteoarthritis (degenerative joint disease) is a progressive, chronic condition that affects many dogs, especially as they age. It involves the gradual breakdown of cartilage within joints, leading to pain, stiffness, and reduced mobility. Breeds prone to hip dysplasia, elbow dysplasia, and other joint conditions are at increased risk.

Signs of arthritis include stiffness after rest, difficulty rising, reluctance to jump or climb stairs, decreased interest in play or walks, and a gradual decline in activity level. Arthritis-related limping tends to be worse in the morning or after periods of inactivity and may improve slightly with gentle movement.

While arthritis cannot be reversed, a multimodal management approach — including weight management, joint supplements, anti-inflammatory medications, physical rehabilitation, and lifestyle modifications — can significantly improve comfort and quality of life. A veterinary evaluation, including X-rays to confirm the diagnosis, helps establish the most effective management plan for your dog.

While mild, intermittent limping may not require emergency attention, certain circumstances warrant urgent evaluation. A dog that cannot bear weight on a leg at all, shows visible deformity or swelling, or is in obvious pain should be seen by a veterinarian promptly.

Sudden, severe lameness — especially in the hind limb — can indicate a cruciate ligament tear, fracture, or dislocation that benefits from early treatment. Limping that worsens over time rather than improving suggests a progressive condition that needs diagnosis.

If your dog is limping and also showing signs of systemic illness — lethargy, fever, loss of appetite, or swelling in multiple joints — this may indicate an infectious or immune-mediated condition that requires more urgent care. When in doubt, a veterinary evaluation can help determine whether the situation is urgent or can be monitored.