Signs of Ear Problems in Pets: A Complete Guide to When to See a Vet

Your pet can't tell you their ear hurts, but they communicate discomfort through behaviour and physical signs. Learning to read these signals is one of the most valuable skills a pet owner can develop — early detection of ear problems means simpler treatment, less pain, and lower vet bills.

"The number one reason ear problems become serious is delayed presentation. Owners often wait weeks before bringing their pet in, by which point a simple outer ear infection has progressed to involve the middle ear. If you notice any change in your pet's ears or ear-related behaviour, a vet check within a few days can save weeks of treatment." — Dr. Sarah Chen, DVM

Ear problems in pets fall into three broad categories based on location:

• Outer ear (otitis externa) — affects the ear canal and flap; the most common type, usually caused by infection, allergies, or parasites
• Middle ear (otitis media) — affects the space behind the eardrum; often a progression of untreated outer ear disease
• Inner ear (otitis interna) — affects the balance and hearing organs; the most serious, with neurological symptoms

The symptoms you observe correlate with which part of the ear is affected, which is why understanding the signs helps you — and your vet — respond appropriately. Let's break down every symptom you might see, from mild to emergency.

These signs suggest early or mild ear irritation. They don't require emergency care, but schedule a vet visit within a few days if they persist beyond 24–48 hours:

In Dogs

• Occasional head shaking — more than their normal post-nap or post-walk shake, but not constant
• Mild ear scratching — using the hind foot on one or both ears, especially after walks or meals
• Slight redness — pink tinge inside the ear flap that wasn't there before
• Light brown wax increase — more wax than usual, but light in colour and waxy in texture (not wet or foul-smelling)
• Ear flicking — quick, repetitive movements of the ear flap as if trying to dislodge something

In Cats

• Increased ear grooming — licking paws and wiping ears more than usual
• Occasional head shaking
• Subtle ear twitching — particularly when you touch near the ears
• Small amount of dark wax — may be normal for some cats, but worth monitoring if it's new

What to Do

If you're comfortable with ear cleaning, a gentle clean with a vet-approved solution may resolve mild wax buildup. If symptoms persist beyond 48 hours or worsen at any point, book a vet appointment. Don't apply leftover ear medication from a previous infection — different infections require different treatments.

These symptoms indicate an established ear problem that needs professional diagnosis and treatment. While not emergencies, they shouldn't wait for a 'routine' appointment — most vet practices can fit you in within 1–2 days:

Discharge Changes

• Brown, thick discharge — suggests yeast infection (Malassezia); often smells sweet or bready
• Yellow or green discharge — indicates bacterial infection; usually foul-smelling
• Dark, crumbly discharge (like coffee grounds) — classic sign of ear mites, especially in cats and puppies. See our ear mites guide for details
• Bloody discharge — could indicate a scratch from self-trauma, a polyp, or a foreign body

Behavioural Signs

• Frequent, vigorous head shaking — multiple times per hour; risk of developing an ear hematoma
• Rubbing ears on furniture, carpet, or the floor
• Whimpering or crying when ears are touched
• Personality changes — a normally friendly pet becoming irritable, withdrawing, or snapping when approached from one side

Physical Signs

• Visible swelling of the ear canal entrance — the opening looks narrower than normal
• Redness extending beyond the ear — onto the skin around the base of the ear
• Hair loss around the ears — from scratching or rubbing
• Crusting or scabbing — on the ear flap edges or around the canal opening

At this stage, your vet will likely perform an otoscopic exam and ear cytology to identify the specific cause and prescribe targeted treatment.

These symptoms suggest middle or inner ear involvement, or complications that can become dangerous if treatment is delayed. Contact your vet or emergency clinic immediately:

Neurological Signs (Inner Ear Involvement)

• Persistent head tilt — the head leans consistently to one side; the affected ear is usually on the tilted side
• Loss of balance — stumbling, falling to one side, reluctance to walk, circling in one direction
• Nystagmus — involuntary rapid eye movement, usually side to side (horizontal) or rotating. This is a key indicator that the vestibular system (inner ear) is involved
• Nausea and vomiting — inner ear problems affect balance, causing motion sickness
• Disorientation — the pet seems confused, can't navigate normally, may bump into objects

Facial Nerve Signs

• Drooping eyelid, lip, or ear on one side — the facial nerve runs through the middle ear; infection or inflammation can damage it
• Inability to blink on one side — requires eye lubrication to prevent corneal damage
• Drooling from one side of the mouth

Horner's Syndrome

• Small (constricted) pupil on one side
• Droopy upper eyelid
• Sunken-appearing eye
• Elevated third eyelid

These symptoms indicate that the sympathetic nerve supply (which passes near the middle ear) is compromised. While often reversible with treatment of the underlying ear disease, it requires prompt diagnosis.

Other Emergency Signs

• Sudden deafness — not responding to sounds, especially from one side
• Swollen, balloon-like ear flap — aural hematoma that may need surgical drainage
• Severe pain — screaming when the ear or head is touched, refusing to eat, hiding

Knowing what to expect at your appointment helps you prepare and helps your vet diagnose more efficiently:

Before the Visit: Information to Gather

• When did you first notice the symptoms?
• Which ear(s) are affected?
• Has your pet had ear problems before? When, and what treatment was used?
• Any recent changes — new food, new environment, swimming, contact with other animals?
• Is your pet on any medications or supplements?
• Does your pet have known allergies?

During the Examination

Your vet will typically:

• Visual inspection — examine both ears externally for swelling, discharge, and pain response
• Otoscopic exam — use an otoscope to look inside the ear canal, assess the eardrum, check for foreign bodies or masses
• Ear cytology — swab the discharge and examine under a microscope (takes 5–10 minutes). This tells your vet whether bacteria, yeast, or both are present, and guides treatment choice
• Pain assessment — if the ear is too painful for examination, sedation may be recommended

Treatment Plan

Based on findings, your vet will typically prescribe:

• Topical ear medication — drops or gel containing the appropriate combination of antibiotic, antifungal, and steroid
• Ear cleaning protocol — specific cleanser and frequency
• Pain relief — if the ear is very inflamed or painful
• Follow-up appointment — typically 7–14 days to recheck cytology and confirm resolution

Always attend the follow-up recheck, even if the ear looks better. Ears that look healed may still harbour residual infection that will flare without completing treatment. For more on understanding and managing your pet's pain signals, see our guide on recognising pain in pets.