Why your dog keeps getting ear infections (the honest version)
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Dog Ear Infections, Honestly Explained
Tuesday: bath, tidy, blow dry. Friday: a photo of a red, smelly, sore ear and the unspoken question.
"It was the bath, right?"
Almost never.
The bath is the trigger, not the cause. The infection started weeks earlier, sitting quietly under the surface, waiting for something to push it over the edge.
How a dog's ear is actually built
Before you can understand why dogs get ear infections, you have to understand what makes their ears different from yours. Tap any number on the diagram below.
Tap any number to see what it is and why it matters.
Quick symptom check
Catching an ear infection in the first 48 hours can be the difference between a single course of drops and a chronic case that takes months to resolve. Tap any symptoms you have noticed in your dog. The result updates as you go.
Find your dog's risk profile
The biggest study ever done on this followed 22,333 UK dogs in primary care for a year. 7.3 percent developed an ear infection in that single year, making it the most common medical issue in dogs full stop. Here is where your dog sits.



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Drag the pink marker along the line to see where specific breeds sit
Ear shape is a predisposing factor, not a cause. It makes the environment more friendly to infection. It does not, on its own, cause one. A floppy eared dog with no underlying skin or allergy issue can go a lifetime without a single ear infection. We see this every week.
The groomer myth, said plainly
A bath does not cause an ear infection in a dog with healthy ears. Almost every flare blamed on the groomer was actually triggered by one of these six things, and the trigger is never the cause.
Things groomers can occasionally get wrong
In the interest of being honest in both directions, here is the short list. None of these will cause an infection in a dog with healthy ears, but they are worth knowing about.
Plucking ear hair when there is no infection
Tap to read moreModern veterinary dermatology consensus is to leave ear hair alone unless it is a clinical problem. Plucking creates microscopic tears that can light up an already inflamed ear.
Forced air drying directly into the canal
Tap to read moreA good groomer angles airflow across the ear, not into it. High pressure air aimed straight down the canal stirs up debris and can be uncomfortable.
High alcohol or homemade ear cleaner
Tap to read moreAlcohol heavy products dry the canal too aggressively and strip the natural protective oils. Reputable salons use vet recommended cleaners only.
Cotton tips pushed deep into the canal
Tap to read moreNo professional groomer should be doing this. It pushes wax deeper and can cause damage. Cotton wool on the visible part of the ear flap only.
What actually causes ear infections
Veterinary dermatologists divide the causes into four tiers. Knowing which tier you are dealing with is the difference between treating a symptom and actually fixing the problem.
Tap any stage to read more about it
Most often allergies (atopic dermatitis or food allergy), behind 43 to 75 percent of recurring cases. Also mites (mainly puppies), grass seeds (Australian summers), thyroid disease, and autoimmune conditions. This is the layer everyone skips, and it is the answer to recurring infections.
Three or more ear infections in 12 months means the answer is not stronger drops, it is finding the primary cause. In Australia that means an allergy workup, a thyroid panel for older dogs, and a careful check for grass seeds.
Sudden head shaking within 48 hours of walking through long grass is a vet today situation. Spear Grass, Barley Grass, and Wild Oats produce barbed seeds that travel one way only. They do not work themselves out and can perforate the eardrum.
Prevention that actually works
Most prevention advice on the internet is either harmless or actively counterproductive. Here is the version we give clients at the salon. Tap any card to read the detail.
Address the underlying cause
✓ Address the underlying cause
If your dog has flared more than twice, stop treating ears in isolation. Get an allergy workup. The highest impact thing you can do for a recurrent ear dog.
Dry the ears after wet activity
✓ Dry the ears after wet activity
A clean, dry cotton pad gently wiped around the visible part of the canal after every bath or swim. Do not push anything deep, just absorb surface moisture from the entrance.
Use a vet recommended cleaner weekly
✓ Use a vet recommended cleaner weekly
For high risk dogs. Squirt into the canal, massage 15 seconds, let the dog shake, wipe out with cotton wool. That is the entire process.
Weekly 30 second ear check
✓ Weekly 30 second ear check
Lift the ear flap, look at the visible canal, smell it. 30 seconds, once a week. Catches almost every infection in the first 48 hours.
Check after grass walks
✓ Check after grass walks
Spring and summer especially. A seed caught in fur is harmless. A seed in the canal is an emergency. Sudden head shaking after long grass means a vet today situation.
Keep grooming on a regular schedule
✓ Keep grooming on a regular schedule
A well groomed dog has trimmed hair around the ears, clean canals, and a professional spotting early signs you might miss between vet visits.
Cotton tips inside the canal
✕ Cotton tips inside the canal
They push debris deeper and can damage the eardrum. Cotton wool on the visible part of the ear flap only, never inside the canal itself.
Cleaning ears that look and smell normal
✕ Cleaning normal ears
Over cleaning strips the natural protective oils and can actually trigger inflammation. If they look and smell normal, leave them alone.
Plucking ear hair preventively
✕ Plucking ear hair preventively
Pluck only if your vet specifically advises it. Microtrauma from plucking can light up an inflamed ear and accelerate a flare.
Vinegar, peroxide, olive oil, home remedies
✕ Home remedies
Vinegar, hydrogen peroxide, olive oil, garlic mixes. These either burn an inflamed canal, encourage bacterial growth, or both. None are safe for an actively inflamed ear.
Skipping the vet
✕ Skipping the vet
The wrong medication, or the right medication used too long, drives bacterial resistance and sets up chronic disease. A skipped recheck is the single most common reason flares come back.
Frequently asked questions
Can I get my dog groomed if they have an ear infection?
It depends on severity. A mild, recently diagnosed infection that is being actively treated is usually fine for a careful groom, with the ear protected and not flushed. A severe, painful, actively flaring infection should wait until the dog has finished treatment. Always tell your groomer in advance. At Dog Love we adjust the bathing approach for any dog with a known ear issue, and we will reschedule rather than aggravate an actively painful ear.
Should I pluck the hair out of my dog's ears?
Modern veterinary dermatology consensus is to leave ear hair alone unless it is causing a clinical problem. Plucking creates microscopic tears in the canal lining, and in an already inflamed ear it can accelerate a flare. The old groomer rule of plucking every dog every visit is outdated.
What is the best ear cleaner for dogs?
For routine maintenance in a healthy dog, vets in Australia commonly recommend Epi Otic Advanced, PAW Gentle Ear Cleaner, or similar pH balanced drying cleaners. For active infections, your vet will prescribe a specific medicated product matched to whether the infection is yeast, bacterial, or both. Avoid anything containing high alcohol, hydrogen peroxide, or vinegar as a primary ingredient.
How often should I clean my dog's ears?
For a low risk dog with normal ears, almost never. A monthly check is usually enough. For a high risk dog (floppy eared, frequent swimmer, or one that has had a previous infection), once a week with a drying cleaner is reasonable. Daily cleaning is not necessary, even after a swim. Drying the ear surface with cotton wool is enough.
Is swimming bad for my dog's ears?
For a dog with no underlying ear issue, swimming is fine as long as the ears are dried properly afterwards. For a dog with a history of ear infections, swimming is one of the strongest known triggers, and these dogs benefit from a drying ear cleaner used after every swim. The water is a trigger, not a cause.
How much does ear infection treatment cost in Australia?
A first time, uncomplicated ear infection in a general practice clinic in Adelaide typically runs in the range of $150 to $300, including consult, cytology, and medication. A chronic or recurrent case can easily run into the thousands across multiple consults, repeat medications, allergy workups, and possibly specialist referral. This is the financial argument for treating the underlying cause once, properly.
My dog gets an infection every time after grooming. Is the groomer doing something wrong?
Almost certainly not. As covered above, a bath does not cause an ear infection in a dog with healthy ears. If your dog flares every time, your dog has an underlying chronic issue (most often allergies) and the groom is one of several possible triggers. Switching groomers will not fix it. An allergy workup will.
Can ear infections cause permanent damage?
Yes, if untreated or repeatedly mistreated. Chronic inflammation causes the canal walls to thicken and narrow (stenosis). Ruptured eardrums can lead to middle ear involvement, balance issues, and in severe cases hearing loss. Some end stage cases require surgical removal of the ear canal (TECA). All preventable by treating the underlying cause early.
Worried about your dog's ears?
If you are in Adelaide and your dog is overdue for a groom, or if you have noticed early signs and want a second pair of eyes, book a visit. We check ears as part of every appointment and we will tell you honestly what we see.
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