TL;DR: An unsteady gait (ataxia) in dogs is often a sign of a serious neurological or sensory issue and should be treated as a medical emergency if it appears suddenly. If your dog is stumbling or wobbling, contact a veterinarian immediately and record a video of their movement to help with the triage process.
What is an unsteady gait or ataxia in dogs?
An unsteady gait, often medically referred to as ataxia, occurs when a dog lacks coordination in their limbs, head, or trunk. This can manifest as wobbling, swaying, crossing legs while walking, or looking 'drunk.' It is typically a sign that something is interfering with the sensory system, the spinal cord, or the brain's ability to process balance.
Is my dog's unsteady gait a veterinary emergency?
Urgency Level: High. A sudden onset of stumbling or an inability to walk is considered a medical emergency. You should proceed to the nearest emergency animal hospital immediately if your dog is experiencing:
- Potential toxin ingestion, strokes, or severe spinal cord compression
- Seizures
- A noticeable head tilt
- Rapid, involuntary eye movement
- Extreme lethargy or inability to stand
How do videos and photos help the veterinarian triage my dog?
When you contact a veterinarian, providing a short video of your dog attempting to walk can be incredibly helpful for triage for the following reasons:
- Neurological symptoms can be intermittent or may change by the time you reach the clinic.
- A clear visual record allows the veterinary team to differentiate between orthopedic pain and neurological deficits.
- It helps the clinical team prioritize your pet's care and prepare the necessary diagnostic tools before you even arrive.
Clinical Context (Merck Veterinary Manual)
Unsteady gait and stumbling in dogs can arise from various neurological disorders. Cerebellar disorders often manifest as an intention tremor, wide-based stance, and incoordination (dysmetria) of the head, trunk, and limbs. Brain stem disorders may result in cranial nerve dysfunction, postural disturbances, or vestibular dysfunction; weakness and proprioceptive gait disturbances may also be observed. Spinal cord disorders typically do not affect cerebral function or head movement coordination but can cause weakness, motor dysfunction, or proprioceptive deficits in the limbs, potentially including dysmetria or reduced proprioceptive placing. Neuromuscular disorders, affecting peripheral nerves, neuromuscular junctions, or muscles, can also contribute to gait abnormalities. Additionally, certain genetic conditions like fucosidosis in English Springer Spaniels and other glycoproteinoses can lead to ataxia and other neurological deficits, impacting gait.
Chapter: Neurology, Neuromuscular
Source: The Merck Veterinary Manual, 11th Edition (Page 1222)