Dog shaking head persistently
Persistent head shaking points to ear problem, foreign body, or in rare cases neurological disease — book a vet visit promptly to prevent ear haematoma and middle-ear damage.
Recognise the signs
- Vigorous, repeated head shaking
- Pawing or scratching at the ear
- Ear discharge or smell
- Redness or swelling of ear flap or canal
- Sudden swelling of the ear flap (haematoma)
- Head tilt, balance loss, eye flicking — more urgent
- Pain when ears are touched
First aid steps
- Look gently into the ear without inserting anything.
- Note discharge, smell, and recent walks in long grass.
- Phone the vet — same day if recent walk in long grass (suspected grass seed), severe shaking, head tilt, balance loss, or sudden swelling. Within 1–3 days otherwise.
- Restrict head shaking where possible — rest in a quiet space.
- Avoid wetting the ears.
Do NOT
- Do not insert cotton buds or instruments into the ear canal.
- Do not use leftover ear drops.
- Do not assume it will pass — ongoing shaking often causes haematoma.
- Do not delay if head tilt or balance loss develops.
When to phone the vet immediately
- Head tilt, walking in circles, eye flicking
- Sudden swelling of the ear flap
- Severe pain
- Bleeding from the ear
- Recent walk in long grass — grass seed suspected
- Older dog with sudden severe imbalance — vestibular disease, urgent
Signs that can usually wait for a routine appointment
- Brief occasional head shaking in a bright dog with no discharge can be monitored for 24 hours, but persistent shaking warrants a vet visit.
Common causes
- Ear infection or inflammation (commonest cause)
- Grass seed in the ear (especially summer)
- Ear mites
- Foreign body — sand, debris
- Allergic ear disease
- Ear haematoma developing from prolonged shaking
- Middle/inner ear infection (head tilt and balance loss)
- Vestibular disease (older dogs — sudden severe imbalance)
- Neurological causes (rare)
What the vet will need to know
- How long the shaking has been happening
- Recent walks in long grass
- Other signs — discharge, smell, balance, head tilt
- Previous ear infections or allergies
- Recent swimming or bathing
Aftercare
- Treatment per cause — ear drops, foreign body removal under sedation, ear haematoma surgery, vestibular supportive care.
- Recheck visit to confirm resolution.
- Long-term ear care plan for prone breeds.
- Address underlying allergies.
Prevention
- Check ears after every long-grass walk.
- Trim hair around ears in heavily furred breeds.
- Dry ears after swimming and bathing.
- Manage underlying allergies.
Breed-specific notes
- Floppy and hairy-canal breeds: Cocker Spaniel, Springer Spaniel, Basset Hound, Cavalier King Charles Spaniel.
- Older dogs at higher vestibular disease risk.
Frequently asked questions
Why does head shaking cause swelling of the ear flap?
Vigorous shaking ruptures small blood vessels between the layers of the ear flap, causing a haematoma (blood blister). It looks dramatic and almost always requires surgical drainage. Treating the underlying ear cause early prevents most cases.
How urgent is a grass seed in the ear?
Same-day urgent. Grass seeds migrate, cause severe pain, and can perforate the ear drum within hours to days. Sudden onset of dramatic head shaking after a walk through long grass is a classic presentation.
What is vestibular disease?
A sudden disturbance of balance — head tilt, walking in circles, eye flicking, often nausea — most often seen in older dogs. It usually improves over days to weeks with supportive care, though some dogs retain a slight head tilt. It looks like a stroke but is usually not — vet review is essential to confirm.