Canine Gait: Normal Patterns, Lameness Grading & Gait Analysis

Gait analysis is one of the most fundamental skills in veterinary orthopedic and neurological assessment. The way a dog moves provides immediate clinical information about pain, joint function, muscle strength, and nervous system health. A thorough gait evaluation is usually the first step in any lameness workup and often guides the entire diagnostic plan.

Normal locomotion requires coordinated function of the musculoskeletal and nervous systems working together. Bones and joints provide the structural framework, muscles generate the forces, and the brain, spinal cord, and peripheral nerves coordinate timing and balance. A problem at any level can change the way a dog walks, trots, or runs.

Dogs are digitigrade animals, meaning they walk on their toes rather than the soles of their feet. This anatomical arrangement, combined with relatively long limb segments and flexible spines, gives dogs their characteristic efficient locomotion. The basic gait cycle for each limb consists of two phases: the swing phase when the limb is off the ground moving forward, and the stance phase when the limb is on the ground bearing weight.

Gaits are broadly classified as symmetrical or asymmetrical. In symmetrical gaits like the walk and trot, the movement pattern of one side mirrors the other. In asymmetrical gaits like the canter and gallop, the limbs on each side move differently, creating a bounding motion with periods of suspension.

Changes in gait can be subtle or dramatic. A slight shortening of stride length may indicate early joint pain, while a complete refusal to bear weight on a limb signals acute injury. The clinical significance ranges from mild discomfort that responds to rest to serious orthopedic, neurological, or systemic disease requiring urgent intervention. Learning to recognize normal and abnormal movement patterns helps owners seek veterinary care at the right time.

Understanding normal canine gait patterns is essential before identifying abnormalities. Dogs use several distinct gaits depending on their speed, the terrain, and the activity.

Walk. The walk is a four-beat gait in which each foot contacts the ground independently in a lateral sequence: left hind, left front, right hind, right front. At least two feet are always on the ground, and three-foot support occurs during most of the stride cycle. This makes the walk the most stable gait. Medium-sized dogs typically walk at about 1.5 to 2 meters per second. Because the walk is slow, it can be difficult to detect mild lameness at this speed, which is why veterinarians also evaluate dogs at a trot.

Trot. The trot is a two-beat diagonal gait in which diagonal limb pairs move together. The left hind and right front contact the ground at nearly the same time, followed by the right hind and left front. Some dogs exhibit a flying trot with a brief period of suspension between diagonal pairs. The trot is the primary gait used for clinical lameness evaluation because its rhythmic diagonal pattern makes asymmetry easier to detect. Medium-sized dogs typically trot at about 2 to 4 meters per second.

Canter and Lope. The canter is a three-beat asymmetric gait with a designated lead leg. One hind limb strikes the ground first, followed by the opposite hind and its diagonal forelimb together, and finally the lead forelimb. A brief period of suspension follows. The canter can follow a transverse pattern, where the lead fore and hind legs are on the same side, or a rotary pattern, where they are on opposite sides.

Gallop. The gallop is the fastest four-beat gait. Both hind limbs push off in quick succession, followed by both forelimbs, creating two periods of suspension in each stride when all four feet are off the ground. Greyhounds in a rotary gallop can reach speeds approaching 45 miles per hour. The double-suspension gallop distinguishes the gallop from the canter and allows maximum speed. Both rotary and transverse gallop patterns occur depending on speed and breed.

Pace. The pace is a two-beat lateral gait in which the front and hind limbs on the same side move together. Some large and giant breed dogs pace naturally at slow speeds, particularly breeds with long legs relative to body width. However, pacing can also indicate pain, fatigue, or neurological compromise, so context matters when evaluating this gait.

Amble. The amble is a relaxed variant of the lateral gait pattern, slower and less rigid than a true pace. The ipsilateral limbs do not move in perfect synchrony but stagger slightly. Some dogs amble as a transitional gait between the walk and trot.

Consistent grading of lameness severity helps veterinarians communicate findings, track changes over time, and assess treatment response. Two scales are widely used in clinical practice and research.

AAHA Lameness Grading Scale. The American Animal Hospital Association scale is the most commonly used system in general veterinary practice. It grades lameness on a five-point scale. Grade I lameness is difficult to observe and inconsistent, often visible only intermittently or under specific conditions. Grade II lameness is difficult to observe at a walk but becomes consistent at a trot. Grade III lameness is consistently observable at a walk. Grade IV lameness is obvious, with a significant head bob on forelimb lameness or a noticeable hip hike on hindlimb lameness. Grade V lameness is non-weight-bearing, meaning the dog holds the limb up and does not place it on the ground.

ACVS Numerical Scale. The American College of Veterinary Surgeons uses a zero-to-five scale that is common in orthopedic surgery literature and research. Grade 0 indicates a sound animal. Grade 1 is barely detectable lameness. Grade 2 is mild lameness. Grade 3 is moderate lameness. Grade 4 is severe lameness. Grade 5 is non-weight-bearing.

Interpreting Head Bob. In forelimb lameness, the dog drops its head when the sound (non-painful) limb contacts the ground and lifts its head when the lame limb bears weight. This can be counterintuitive because the head bob is most dramatic during the sound limb's stance phase, not the lame limb's stance phase. Remembering that the head drops on the good leg helps correctly identify which forelimb is affected.

Interpreting Hip Hike. In hindlimb lameness, the pelvis elevates on the lame side during the swing phase as the dog shifts weight away from the painful limb. The pelvis may also drop more on the sound side during its stance phase. Hip hike is the hindlimb equivalent of head bob and follows the same principle of weight redistribution away from the painful limb.

Weight-Bearing Versus Non-Weight-Bearing Lameness. This distinction has important clinical implications. Weight-bearing lameness, where the dog uses the limb but with an altered gait, is more common with chronic conditions such as arthritis, mild sprains, or early cruciate disease. Non-weight-bearing lameness, where the dog completely avoids placing the limb on the ground, typically indicates acute injury, fracture, severe ligament damage, or intense pain.

Detecting Subtle Lameness. Mild lameness may only become apparent when the dog trots on a hard, level surface such as pavement. Soft or uneven ground absorbs impact and can mask a mild gait abnormality. Veterinarians typically evaluate lameness with the dog trotting on a leash in a straight line, then turning, and sometimes on a slight incline. A minimum of three passes at each gait is recommended before drawing conclusions.

Gait abnormalities fall into two broad categories: orthopedic, where the problem originates in bones, joints, muscles, or connective tissue, and neurological, where the problem involves the brain, spinal cord, or peripheral nerves. Some conditions affect both systems.

Forelimb Lameness Patterns. Dogs with forelimb pain show a characteristic head bob, shortened stride length on the affected limb, and a tendency to shift weight toward the hindquarters. The shoulder may drop less on the painful side. With bilateral forelimb lameness, the head bob may be absent because both sides are equally affected, making diagnosis more challenging.

Hindlimb Lameness Patterns. Hindlimb lameness produces hip hike on the affected side, shortened stride, and sometimes circumduction, where the limb swings outward in an arc rather than moving straight forward. Dogs with bilateral hindlimb disease such as hip dysplasia affecting both sides often develop a bunny-hopping gait, moving both hind limbs together rather than alternating. This compensatory pattern distributes weight more evenly between the two painful hips.

Ataxia. Ataxia refers to incoordination that results from neurological disease rather than pain. Proprioceptive ataxia, caused by spinal cord or peripheral nerve damage, produces toe dragging, crossing over of the limbs, delayed limb placement, and knuckling. Vestibular ataxia, from inner ear or brainstem disease, causes a head tilt, circling toward the affected side, falling, and sometimes nystagmus. Cerebellar ataxia produces exaggerated movements called hypermetria, intention tremors that worsen when reaching for a target, and a wide-based stance.

Stiff or Stilted Gait. A generalized stiffness with short, choppy strides may indicate polyarthritis affecting multiple joints, meningitis causing neck and back pain, or diskospondylitis, which is an infection of the intervertebral discs and adjacent vertebrae. Dogs with these conditions often resist bending the spine and may have a rigid posture.

Short-Strided Gait. A consistently shortened stride in multiple limbs can result from bilateral pain, muscle contracture, or conditions affecting the spine. Unlike focal lameness that affects one limb, a short-strided gait may look more like general stiffness than a specific limp.

Bunny-Hopping. This pattern, in which both hind limbs move together in a synchronous hop, is most commonly associated with bilateral hip dysplasia or bilateral cranial cruciate ligament disease. In puppies, occasional bunny-hopping during play may be normal, but persistent bunny-hopping during regular locomotion warrants veterinary evaluation.

Knuckling. Knuckling occurs when a dog walks on the top surface of the paw rather than the pads because it cannot properly position the foot. This is a proprioceptive deficit indicating neurological disease such as degenerative myelopathy, intervertebral disc disease, or fibrocartilaginous embolism. Knuckling can be tested by gently flipping the paw over and observing how quickly the dog corrects foot placement.

Circumduction. Some dogs swing one or both hind limbs outward in an arc during the swing phase instead of moving the leg straight forward. This may reflect hip pain avoidance, reduced hip range of motion, or neurological dysfunction affecting normal limb trajectory.

Hypermetria and Dysmetria. These terms describe exaggerated or poorly calibrated limb movements. Hypermetric dogs lift their limbs too high and place them too forcefully. This pattern is characteristic of cerebellar disease and is often accompanied by intention tremors and a wide-based stance.

Paresis and Paralysis. Paresis is weakness with some voluntary movement retained, while paralysis is complete loss of voluntary motor function. The neurological pattern differs depending on whether upper motor neurons or lower motor neurons are affected. Upper motor neuron lesions produce spastic paresis with increased reflexes, while lower motor neuron lesions produce flaccid paresis with decreased reflexes and rapid muscle wasting.

Multiple methods exist for evaluating canine gait, ranging from simple visual observation to sophisticated laboratory instrumentation. The approach depends on the clinical question, available equipment, and whether the goal is diagnosis, treatment monitoring, or research.

Visual and Subjective Assessment. Direct observation remains the most common clinical method for evaluating gait. The examiner watches the dog walk and trot on a hard, level surface, observing from the front, behind, and both sides. A minimum of three passes at each gait is recommended. The observer looks for asymmetry, stride length differences, head bob, hip hike, joint stiffness, and abnormal limb placement. While subjective, experienced clinicians can reliably detect moderate to severe lameness. Mild lameness is more difficult and interobserver agreement decreases for subtle abnormalities.

Force Plate Analysis. Force plates are flat sensors embedded in the floor that measure ground reaction forces as the dog walks or trots across them. The two primary measurements are peak vertical force, the maximum downward force during the stance phase, and vertical impulse, the total force applied over the entire stance phase. A lame dog places less force on the painful limb. Force plate analysis is considered the gold standard for objective lameness quantification and is widely used in research, clinical trials, and veterinary specialty practices.

Pressure-Sensitive Walkway Systems. Systems such as Tekscan and GAITRite use thin sensor mats that map pressure distribution across the entire paw during each step. Unlike single force plates that capture one footfall at a time, walkway systems can record multiple consecutive strides. They provide data on contact area, pressure distribution, gait timing, and stride symmetry.

Kinematic Analysis. Motion capture systems use reflective markers placed on anatomical landmarks to track joint angles, stride length, and limb symmetry through three-dimensional space. High-speed cameras or infrared tracking systems record marker positions, and software calculates joint range of motion throughout the gait cycle. Kinematic analysis is primarily used in research settings and advanced rehabilitation facilities.

Accelerometer and Inertial Measurement Unit Systems. Wearable sensors containing accelerometers and gyroscopes can be attached to the dog's body to measure movement patterns objectively. These systems are becoming more accessible and some are available commercially for clinical use. They can quantify lameness severity, detect asymmetry, and monitor treatment response over time without requiring a specialized laboratory.

Video Analysis. Slow-motion video recorded on a smartphone can be a valuable diagnostic aid. Owners can capture gait at home where the dog moves more naturally than in a veterinary clinic. Recording from the front, behind, and both sides at walk and trot provides the most useful information. Many veterinarians encourage clients to send video before or between appointments to document intermittent or exercise-induced lameness.

Flexion Tests. Although not a gait analysis tool per se, flexion tests are a common part of the lameness evaluation. The examiner holds a joint in maximal flexion for 30 to 60 seconds, then immediately trots the dog. Increased lameness after flexion suggests pain originating from that joint. This technique helps localize the source of lameness when multiple joints may be involved.

Every breed has a characteristic gait described in its breed standard, and understanding breed-normal movement is important for accurate lameness assessment. What appears abnormal in one breed may be perfectly normal in another.

German Shepherds are known for their flying trot with maximum reach in the forelimbs and powerful drive from the hindquarters. Their relatively low hock-to-ground angle and long stride make their trot appear distinctly different from most other breeds. However, excessive angulation in poorly bred individuals can produce a gait that looks exaggerated even for the breed.

Chow Chows have a characteristically stilted hindlimb gait due to their relatively straight rear angulation. The short, choppy stride in the rear is breed-normal and should not be mistaken for neurological dysfunction or pain.

Bulldogs and other brachycephalic breeds with broad chests typically have a rolling gait as the body shifts laterally with each step to accommodate the wide stance. This lateral motion is breed-typical and results from their unique skeletal proportions.

Greyhounds and other sighthounds are built for speed and demonstrate a dramatic double-suspension gallop. Their flexible spines, deep chests, and long limbs allow them to reach speeds approaching 45 miles per hour. At slower speeds, some sighthounds may appear less graceful than their galloping form suggests.

Giant breeds such as Great Danes, Saint Bernards, and Mastiffs may normally pace at slow speeds. The pace, where ipsilateral limbs move together, is a more energy-efficient gait for very large dogs and should not automatically be considered abnormal in these breeds.

Dachshunds and other chondrodystrophic breeds have short legs and long backs that create a distinctive gait with low ground clearance. Their spinal biomechanics differ from longer-legged breeds, and their gait characteristics must be interpreted in the context of their unique anatomy.

When evaluating any dog's gait, the clinician should consider the breed standard as a baseline. A gait that is normal for one breed might prompt a lameness workup in another. Familiarity with breed-specific movement patterns prevents both false alarms and missed diagnoses.

A systematic approach to diagnosing gait abnormalities typically begins with observation and physical examination before moving to imaging and specialized testing.

Systematic Orthopedic Examination. After observing the gait, the veterinarian performs a hands-on orthopedic examination. This involves palpating each joint for swelling, heat, crepitus, or pain, and manipulating joints through their range of motion to detect instability or discomfort. The examination proceeds systematically from distal to proximal, covering each limb and the spine. Specific provocative tests such as the cranial drawer test for cruciate disease or the Ortolani test for hip laxity help identify particular conditions.

Neurological Examination. When the gait pattern suggests neurological involvement, a neurological examination is essential. This includes testing proprioception by placing the paw on its dorsal surface and observing correction speed, checking spinal reflexes such as the patellar reflex and withdrawal reflex, assessing cranial nerve function, and evaluating conscious pain perception in severe cases. The neurological examination helps localize lesions to specific spinal cord segments or brain regions.

Radiography. Standard X-rays are the first-line imaging modality for most orthopedic conditions causing gait abnormalities. Radiographs can reveal fractures, joint effusion, bone tumors, arthritis, hip dysplasia, and many other structural problems. Sedation may be required for proper positioning, particularly when evaluating hips or the spine.

Advanced Imaging. Computed tomography provides detailed cross-sectional views of bone and is particularly useful for complex fractures, elbow dysplasia, and spinal conditions. Magnetic resonance imaging offers superior soft tissue contrast and is the imaging modality of choice for spinal cord compression, brain lesions, meniscal injuries, and soft tissue tumors. Both CT and MRI require general anesthesia.

Arthrocentesis. Joint fluid analysis involves aspirating fluid from an affected joint and examining it microscopically and via culture. This procedure helps differentiate between degenerative joint disease, immune-mediated polyarthritis, and septic arthritis, conditions that may appear similar on physical examination and radiographs but require very different treatments.

Musculoskeletal Ultrasound. Ultrasound can evaluate tendons, ligaments, muscles, and joint surfaces without sedation. It is particularly useful for assessing soft tissue injuries, monitoring healing, and guiding joint injections. Musculoskeletal ultrasound is becoming more widely available in general practice.

Diagnostic Nerve Blocks. Injecting local anesthetic around specific nerves or into joints can help localize the source of pain when the orthopedic examination is inconclusive. If lameness improves after blocking a particular region, the pain is likely originating from that area. This technique is borrowed from equine practice and is gaining wider use in canine orthopedics.

Electrodiagnostics. Electromyography and nerve conduction velocity testing evaluate neuromuscular function. These tests can identify specific nerve injuries, neuromuscular junction disorders, and muscle disease. Electrodiagnostics require specialized equipment and expertise and are typically available at veterinary teaching hospitals and neurology specialty practices.