Dog Ear Infection Symptoms in Australia: How to Spot One Early

For routine ear hygiene between vet visits, our pick is the Pure Majesty Pets Dog Ear Cleaner — 120 mL, A$43, chlorhexidine-free and pH-balanced to 5.0–5.5. For daily support alongside your dog's yeast-care routine, explore our Yeast Support drops (A$47): a ready-made liquid combining caprylic acid C8, apple cider vinegar and oregano with MSM, quercetin and salmon oil for skin support, plus L-glutamine and a S. boulardii postbiotic for digestive support. Mix into food according to the label; it complements veterinary care and does not replace it for an active infection. Both ship free worldwide — to Australia with duties and GST prepaid (DDP), nothing to pay on delivery.

Dog ear infection symptoms show up fast and are hard to miss once you know what to look for. Left alone, these signs tend to worsen within days rather than resolve on their own, because whatever tipped the ear out of balance — allergies, trapped moisture, or a yeast and bacteria overgrowth — is usually still active. That is especially true through a humid Australian summer, when warm, damp ear canals give yeast every advantage. This guide breaks down every symptom worth watching, shows how to tell a yeast-driven flare from a bacterial one, explains why ear infections keep coming back, and lays out exactly when home care is enough versus when your dog needs a vet. For the complete picture of ear anatomy, cleaning and prevention, see our complete dog ear health guide.

What are the first signs of a dog ear infection?

Otitis — inflammation of the ear canal — tends to announce itself with a recognisable cluster of signs before it becomes obvious to the eye. The more of these you notice together, the more likely an infection is brewing:

• Head shaking and tilting — often the very first thing owners notice, as the dog tries to dislodge discomfort in the canal.
• Scratching or pawing at one ear, sometimes hard enough to cause scabs, hair loss or a hot spot at the ear base.
• A noticeable odour — a sweet, musty, "corn-chip" smell usually points toward yeast, while a sharper, fouler smell leans bacterial.
• Discharge in the canal — brown and waxy discharge is typical of yeast overgrowth; yellow-green, pus-like discharge is more often bacterial.
• Redness, swelling and warmth inside the pinna (ear flap) and visible canal.
• Tenderness or pain when the ear is touched, sometimes with whining or pulling away.
• Rubbing the head against furniture, carpet, the lawn or the floor for relief.
• A greasy or crusty look to the fur around the ear opening.

Excess wax (cerumen) alone isn't an infection — some breeds simply produce more — but a sudden increase in dark, odorous cerumen paired with scratching is a strong early signal. If your dog seems itchy elsewhere too — licking paws, chewing the belly or armpits — the ears may be one symptom of a wider allergy flare. In Australia, AVA Vet Voice lists buffalo grass, kikuyu and Wandering Trad among plants that cause contact allergy in dogs, and ASCIA notes grass pollens peak mostly January to March in northern coastal areas and October to December in the south.

The Australian look-alike: tick paralysis

On the eastern seaboard from North Queensland to Victoria, the paralysis tick (Ixodes holocyclus) is active year-round in the north and from spring to late autumn in the south, with numbers rising from October to March. University of Queensland researchers found 73% of ticks on pets on the head and neck — often tucked in or behind the ear. Head shaking or scratching at the ear can be the first thing you see. If your dog also has hind-leg weakness, a change in bark, retching or drooling, treat it as an emergency and get to a vet immediately. RSPCA Australia recommends daily skin checks — and every ear check is a tick check.

Ear infection vs. yeast — how to tell the difference

Most canine ear infections involve Malassezia pachydermatis, a yeast that lives normally on healthy skin but overgrows when the canal turns warm, moist or waxy. The WAVD consensus guidelines note that Malassezia dermatitis is more common in tropical climates and during warm, humid months² — think Brisbane, Cairns, Darwin or the NSW coast in summer. Bacteria — most often Staphylococcus pseudintermedius and, in tougher cases, Pseudomonas aeruginosa — are the other major culprit, and the two often show up together. Smell and discharge alone aren't fully reliable, but the pattern below is a useful starting point before your vet confirms it under a microscope:

Because Malassezia is involved in such a large share of canine otitis cases, our dedicated breakdown of yeast vs. bacterial ear infections walks through the yeast-specific signs, triggers and care in more depth.

Outer ear vs. inner ear: when symptoms turn serious

Most ear infections start in the outer canal (otitis externa) and, while uncomfortable, are manageable with veterinary treatment. When infection tracks deeper into the middle or inner ear (otitis media or interna) — often because an outer infection went untreated for too long — the symptoms change character, and the urgency rises sharply.

Per the Merck/MSD Veterinary Manual, otitis interna commonly produces an ipsilateral head tilt and spontaneous nystagmus as part of peripheral vestibular disease, while otitis media without inner-ear involvement more often causes facial nerve signs, like drooping or an inability to fully blink, without the head tilt.^6,7 In rare, severe cases untreated deep infection can spread further — one more reason early outer-ear symptoms shouldn't be brushed off as "just a bit of wax." Our guide to inner ear infection symptoms covers the deeper picture.

What causes recurring ear infections?

An ear infection is almost always a symptom of something else tipping the canal out of balance — which is exactly why infections that clear up with antibiotics or antifungals often come straight back if the underlying driver isn't addressed. The most common drivers include:

• Allergies — environmental and food allergies are widely reported as the single most common underlying cause of recurring otitis; in dermatology referral settings, most chronic otitis externa cases are linked to underlying atopic disease, and ear inflammation can be the only visible sign of an allergy.¹
• Trapped moisture after swimming at the beach or in the dam, bathing or rainy walks — warm, damp canals favour yeast and bacteria.
• Ear anatomy — floppy-eared, hairy-canalled breeds (Cocker Spaniels, Basset Hounds, Golden Retrievers, Cavaliers, Spoodles and similar) are consistently over-represented in otitis cases because their ear shape traps heat and humidity.
• Ear mites — more common in puppies, producing a dark, coffee-ground discharge and intense itching. Compare them in ear mites vs. ear infection.
• Wax build-up or foreign material, such as grass seeds lodged in the canal.
• A recent course of antibiotics, which can disrupt the skin and gut microbiome and open the door to yeast overgrowth.⁵

A UK primary-care epidemiological study found allergic disease among the leading predisposing factors for canine otitis externa, alongside moisture, ear conformation and endocrine disease — lasting relief usually means managing the trigger, not just the ear.⁸

When should I see a vet for a dog ear infection?

Book a veterinary visit if any of the following apply:

• Your dog is in obvious pain, whines when the ear is touched, or won't let you near it.
• The ear is bleeding, has open sores, or the skin looks broken.
• There's a head tilt, stumbling, circling or loss of balance — treat this as same-day urgent.
• There's hind-leg weakness, a change in bark, retching or drooling — possible tick paralysis; go now.
• The discharge is yellow-green and pus-like, or unusually heavy and dark.
• Symptoms haven't improved within a few days of gentle home cleaning.
• This is a repeat infection — recurring otitis needs a vet to identify and manage the underlying trigger, not just treat the current flare.

A quick swab examined under the microscope (cytology) tells your vet whether it's yeast, bacteria, mites or a mix, and confirms the eardrum is intact before any medicated drops go in. Veterinary sources note this step should be performed for essentially every dog presenting with otitis externa, since treatment choice depends on what's actually growing in the canal, not how the ear looks or smells.⁹ The RSPCA Australia Knowledgebase and the AVA's Vet Voice site are good, independent places to read up before the appointment.

How are dog ear infections treated?

Treatment is matched to the cause your vet identifies on cytology: typically a professional ear flush to clear debris, plus a topical antifungal for yeast, antibiotic for bacteria, or both for mixed infections, often with a mild steroid to calm inflammation and pain short-term. Oral medication and pain relief may be added for more severe cases.

What to realistically expect: mild discomfort and odour often improve within days of starting treatment, but the infection itself isn't resolved that fast. Guidance generally calls for a recheck with repeat cytology roughly every 2–3 weeks until no infection is detectable and the canal has healed — commonly 2 to 4 weeks total, longer for chronic or resistant cases.³ Stopping treatment early because symptoms look better is one of the most common reasons infections come back.

Our dog ear infection treatment guide covers the full veterinary pathway — what a visit involves, typical medications and recovery week by week.

Routine ear care: prevention, not a treatment

Once an active infection is under veterinary care, or for dogs prone to wax build-up and moisture-trapping ears, a consistent cleaning routine reduces how often problems start. This is where a purpose-made dog ear cleaner earns its place — as hygiene and prevention, never a substitute for diagnosis or prescribed medication.

Our formula is pH-balanced to 5.0–5.5 and chlorhexidine-free, so routine cleaning doesn't sting a sensitive canal. It combines 0.2% salicylic acid to lift wax, 10% Aloe ferox with panthenol (pro-vitamin B5) to soothe irritated skin, allantoin and phytosphingosine to support the ear's barrier, and natural cyclodextrin to bind odour at the source rather than masking it with fragrance:

On Australian shelves you'll also find cleaners such as Dermcare Otoflush, Virbac EpiOtic SIS and PAW Gentle Ear Cleaner at Petbarn, Petstock, Pet Circle and vet clinics. If your vet has dispensed one for a diagnosed ear, use it as directed. For the weekly routine, ours is the one we recommend, because every key percentage and the pH are printed on the label. Order the Dog Ear Cleaner for Australian delivery.

Follow the frequency on your bottle's label and your vet's advice: floppy-eared, swimming or yeast-prone dogs often benefit from more frequent cleaning during a flare-up, then tapering back — always alongside, not instead of, your vet's treatment plan. Browse the full ear and eye care for dogs collection for cleaning and support options, and see our dog ear cleaning solution guide for technique.

Common mistakes dog owners make

• Waiting to "see if it clears up" for more than a few days — most infections don't resolve without addressing the underlying cause, and delay usually means more pain and a longer treatment course.
• Pushing cotton buds deep into the canal, which packs debris further in and risks the eardrum. Clean only what you can see, and let your dog shake out the rest.
• Stopping medication as soon as symptoms improve instead of completing the recheck your vet recommends — a leading reason for relapse.
• Treating recurring infections as isolated events instead of investigating the allergy, diet or environment behind them.
• Skipping the tick check — in eastern Australia, every ear inspection should include a feel around the ears, head and neck.
• Using a wax-removal cleaner as if it were a medication for an active, painful infection — hygiene products support healthy ears; they don't replace veterinary diagnosis and prescribed treatment.

Frequently asked questions

What are the first signs of a dog ear infection?

The earliest signs are usually head-shaking, scratching at one ear, and a faint musty or sour odour. Redness inside the ear flap and a brown or waxy discharge often follow within a day or two.

How can I tell if it's a yeast or bacterial ear infection?

Yeast typically causes a brown, waxy discharge and a sweet, musty smell, while bacterial infections more often bring yellow-green, pus-like discharge and a sharper odour. Many infections involve both. Only cytology at your vet clinic can confirm which — or whether it's a mix.

Can a dog ear infection go away on its own?

Occasionally a very mild case settles, but most ear infections worsen without care because the underlying trigger — allergies, moisture or yeast overgrowth — is still present. Early treatment is generally faster and less painful than waiting.

Is a dog ear infection an emergency?

An outer ear infection is uncomfortable but not usually an emergency. A sudden head tilt, loss of balance or rapid eye movements suggest a deeper inner-ear infection and call for same-day veterinary attention. In eastern Australia, hind-leg weakness, a changed bark or retching may be tick paralysis, which is an emergency.

How long does it take for a dog ear infection to clear up with treatment?

Mild discomfort often improves within days of starting treatment, but full clearance is usually confirmed over 2 to 4 weeks with a vet recheck and repeat cytology. Chronic or resistant infections can take longer, especially if an underlying allergy isn't managed.

How often should I clean my dog's ears to help prevent infections?

Follow your cleaner's label and your vet's advice. Floppy-eared, swimming or yeast-prone dogs often need more frequent cleaning during flare-ups and after swims. Routine cleaning supports healthy ears — it isn't a treatment for an active infection.

Does the Pure Majesty Pets Dog Ear Cleaner ship to Australia?

Yes. Shipping is free worldwide, and orders to Australia ship with duties and GST prepaid (DDP), so there is nothing to pay on delivery. A 120 mL bottle is A$43.

Scientific references

1. Saridomichelakis MN, Farmaki R, Leontides LS, Koutinas AF. Aetiology of canine otitis externa: a retrospective study of 100 cases. Veterinary Dermatology. 2007;18(5):341-347. PubMed
2. Bond R, Morris DO, Guillot J, et al. Biology, diagnosis and treatment of Malassezia dermatitis in dogs and cats: WAVD Clinical Consensus Guidelines. Veterinary Dermatology. 2020;31(1):27-e4. PubMed
3. Nuttall T. Successful management of otitis externa. In Practice. 2016;38(S2):17-21.
4. Chen TA, Hill PB. The biology of Malassezia organisms and their ability to induce immune responses and skin disease. Veterinary Dermatology. 2005;16(1):4-26.
5. Craig JM. Atopic dermatitis and the intestinal microbiota in humans and dogs. Veterinary Medicine and Science. 2016;2(2):95-105.
6. Merck/MSD Veterinary Manual. Otitis Externa in Animals. merckvetmanual.com, ear disorders section (veterinary professional edition).
7. Merck/MSD Veterinary Manual. Otitis Media and Interna in Animals. merckvetmanual.com, ear disorders section (veterinary professional edition).
8. O'Neill DG, et al. Frequency and predisposing factors for canine otitis externa in the UK – a primary veterinary care epidemiological view. Canine Medicine and Genetics. 2021;8:7. PMC8422687.
9. Cat and dog ear cytology – a guide on what to do, what for and when. Veterinary Times / Today's Veterinary Practice clinical review of ear cytology sampling and interpretation.
10. RSPCA Australia Knowledgebase. How can I protect my dog or cat from tick paralysis? kb.rspca.org.au.
11. University of Queensland. Paralysis ticks prefer heads and necks of pets (Oct 2025). news.uq.edu.au.
12. AVA Vet Voice. Plant allergies in pets. vetvoice.com.au.
13. ASCIA. Pollen allergy. allergy.org.au.

This article is for general education and does not replace a veterinary examination. Always consult your veterinarian before starting a new supplement, cleaning routine or treatment, particularly if your dog has an existing medical condition. Ear infections involving pain, discharge, a head tilt or balance changes should be examined by a vet — routine ear cleaning supports healthy ears but does not diagnose or treat an active infection, and Pure Majesty Pets products are not intended to cure any disease.