Dog Ear Care and Infections — Calgary

A dog's ear canal is L-shaped — it goes down, then in. This structure traps moisture, heat, and debris in a way that creates a natural predisposition to infection, particularly in floppy-eared breeds where the ear flap further restricts airflow. Most ear infections are preventable with routine care and early intervention. Most ear surgeries are the result of infections that were ignored too long.

Key Context

Why This Matters

Educational

Owners often underestimate ear infections because the dog isn't obviously in pain at first. But untreated otitis externa progresses to middle and inner ear infections, causes irreversible structural changes in the ear canal (calcification, narrowing), and in severe cases requires a surgical procedure called TECA (total ear canal ablation) that costs thousands of dollars and leaves the dog permanently deaf in that ear. Early detection changes that trajectory entirely.

Evidence-Based

Key Facts

Source: General veterinary guidelines

Dogs have an L-shaped ear canal. Moisture, debris, and microorganisms become trapped at the angle — creating ideal conditions for yeast and bacterial growth.

General veterinary guidelines

Malassezia yeast infection is the most common ear infection type. Signs: brown waxy discharge, yeasty or musty odor, itchiness. Bacterial infections often produce more purulent discharge and stronger odor.

General veterinary guidelines

Never insert cotton swabs deeply into a dog's ear canal — the L-shape means you're pushing debris around the corner and compacting it, not removing it.

General veterinary guidelines

Grass awns (foxtails) can enter the ear canal and migrate deeper. A dog that begins sudden repeated violent head shaking after being in tall grass needs same-day ear examination — not wait-and-see.

General veterinary guidelines

Calgary's outdoor culture — foothills hiking, river valley walks — increases grass awn exposure significantly in late summer (August–September). Swimming in Calgary area lakes and rivers increases moisture-related infection risk for floppy-eared breeds.

Calgary climate and outdoor activity context

Recurrent ear infections (more than one per year) almost always indicate an underlying cause — typically environmental allergy, food allergy, or hypothyroidism. Treating infections without addressing the cause is a cycle that can be broken.

General veterinary guidelines

Action Steps

What Owners Should Do

Practical steps you can take right now.

1
Check your dog's ears weekly — smell the ear, look at the color of the canal skin and any discharge. A healthy ear is clean, light pink, and odorless.
2
Clean ears regularly using only a vet-recommended ear cleaner. Apply cleaner, massage the base of the ear for 30 seconds, then let the dog shake. Wipe the visible outer canal only with a cotton ball — never insert swabs deeply.
3
Dry ears thoroughly after swimming or bathing. Use a dry cotton ball at the ear entrance to absorb residual moisture.
4
Keep the hair trimmed around the ear opening for floppy-eared breeds to improve airflow. Ask your groomer to do this at every appointment.
5
If your dog has been in tall grass or hiking areas in late summer, examine the ear canal opening and watch closely for head shaking behavior over the following 24 hours.
6
At the first sign of odor, excessive head shaking, or scratching at the ears — book a vet appointment. Don't wait for the infection to advance.
7
For dogs with recurrent ear infections, ask your vet about allergy investigation — addressing the underlying cause stops the infection cycle.

Red Flags

Warning Signs to Watch For

Know when something needs attention.

Head shaking — especially sudden onset, violent, or persistent head shaking.
Scratching at one or both ears, particularly if the dog seems frustrated or can't stop.
Odor from the ear — yeasty, sour, or rotten smell is not normal.
Discharge visible in the ear canal — brown, black, or yellow discharge indicates infection.
Head tilt, loss of balance, or circling — signs of middle or inner ear involvement, a more serious situation requiring immediate vet care.

When to See a Vet

Any time you detect odor, discharge, or persistent head shaking — within the same week for infection signs, the same day if you suspect a grass awn or if the dog is showing signs of balance problems or middle ear involvement. Don't clean the ear yourself before the vet visit — you may remove diagnostic material.

From the Pack

The PAWS Perspective

What We See

Head shaking is one of the first things we notice at daycare. We observe dogs for hours every day — we catch ear issues early, often before the owner has noticed anything at home. A dog that's shaking their head repeatedly gets flagged at pickup.

How Daycare Connects

We accommodate dogs with known ear conditions — if a dog needs their ears dried after water exposure, we do that. If a dog has had a recent ear infection and the owner asks us to check them before pickup, we do. It's a simple thing that makes a real difference.

Eric's Take

"I've mentioned ear odor to owners at pickup more times than I can count. Most are surprised — they hadn't noticed. Most then go to the vet and find out there was an infection developing. Catching it at that stage costs $150. Missing it costs $1,500. We're going to keep telling people."

— Eric Yeung, Owner, PAWS Dog Daycare

Honest Note

If your dog has had more than one ear infection in a year, treating the infection without asking why it keeps happening is not the answer. Push your vet for the root cause conversation.

Common Questions

Ear Care and Recognizing Ear Problems in Dogs — FAQs

Can I use water to clean my dog's ears?

No. Water doesn't dry adequately in the L-shaped canal and increases infection risk. Use a vet-recommended ear cleaner that contains a drying agent and is pH-balanced for the ear canal environment.

My dog's ears smell but they seem unbothered. Should I clean them?

Odor indicates a problem is developing even if the dog isn't visibly uncomfortable. Dogs habituate to discomfort over time. Book a vet visit to identify the cause rather than cleaning and hoping the smell resolves.

Are floppy-eared dogs always more prone to ear infections?

Yes — the ear flap restricts airflow into the canal, creating warmer, more humid conditions. Breeds like Basset Hounds, Cocker Spaniels, Labrador Retrievers, and Golden Retrievers are disproportionately affected. Routine cleaning and post-swim drying are essential management for these breeds.

Can I use olive oil or coconut oil to clean my dog's ears?

No. These are not appropriate ear cleaners and can worsen yeast growth. Use only products formulated for veterinary ear cleaning — ask your vet for a recommendation specific to your dog's ear type.

My dog had three ear infections this year. Why does this keep happening?

Recurrent infections almost always signal an underlying condition — environmental allergy is the most common, food allergy second, hypothyroidism third. A one-off infection is treated with medication. A pattern of infections needs investigation of the root cause.

What is a grass awn and why is it dangerous?

Grass awns (the seed heads of grasses like foxtail barley, common in Calgary area foothills) have a pointed end and backward-facing barbs. Once inside the ear canal, they move forward with movement and can't be expelled naturally. They require veterinary removal and can cause serious infection if left in place.

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