Signs of Ear Infection in Dogs: What to Watch For

Head Shaking and Scratching: The First Clues

One of the earliest signs of an ear infection is persistent head shaking or scratching at the ears. Your dog might tilt their head to one side or rub their ear along the floor or furniture. This is often a response to irritation or itchiness inside the ear canal. If you notice your dog paying extra attention to their ears, take a closer look.

What to Look for: Discharge, Odor, and Redness

A healthy dog’s ear should be pale pink and clean. Signs of infection include:

Discharge: Yellow, brown, or bloody discharge can indicate infection. Dark, waxy buildup (often yeast-like) is also common.
Odor: A yeasty or sour smell is a red flag. Bacterial infections may produce a foul, pungent odor.
Redness and Swelling: The outer ear (pinna) or ear canal may appear red, inflamed, or swollen. Gently lift the ear flap to check.
Crusting or Scabbing: Sometimes you’ll see dried discharge or sores around the ear opening.

Additional Symptoms to Watch For

Beyond the obvious ear-focused signs, an ear infection can cause:

Pain or Sensitivity: Your dog may flinch or yelp when you touch their ears. They might avoid being petted on the head.
Balance Issues: In severe cases, infections can affect the inner ear, leading to stumbling, circling, or nystagmus (rapid eye movements).
Hearing Loss: Temporary hearing loss can occur due to swelling and discharge. Your dog might not respond to sounds as usual.
Changes in Behavior: Irritability, lethargy, or loss of appetite can accompany painful infections.

Common Causes and Prevention Tips

Ear infections often stem from:

Allergies: Food or environmental allergies can cause inflammation, making the ear prone to infection.
Moisture: Water trapped in the ear after swimming or bathing creates a perfect environment for bacteria and yeast.
Ear Anatomy: Dogs with floppy ears (like Cocker Spaniels, Labradors, or Basset Hounds) have less airflow, increasing risk.
Foreign Bodies: Grass awns or debris can get lodged in the ear canal.

To reduce risk, keep ears dry after water exposure, clean with a vet-approved solution, and manage underlying allergies. But avoid over-cleaning, which can irritate the ear.

When to See a Vet

If you notice any signs, schedule a vet visit. Ear infections can be painful and may worsen without treatment. Your vet will examine the ear with an otoscope, take a sample to identify the cause (bacteria, yeast, or mites), and prescribe appropriate medication (drops, ointments, or oral meds). Never use home remedies like hydrogen peroxide or Q-tips, as they can damage the ear canal. For serious cases, like head tilt, severe pain, or neurological symptoms, seek immediate care. Early treatment prevents chronic issues and hearing loss.

Key Takeaway

Watch for head shaking, odor, discharge, or redness-if you spot these, see your vet for proper treatment.

Sources

AKC
ASPCA

Frequently asked questions

Can dog ear infections go away on their own?

Rarely. Without treatment, ear infections often worsen and can lead to chronic issues or damage to the ear canal. Always consult your vet for proper diagnosis and medication.

What are the most common signs of an ear infection in dogs?

Common signs include head shaking, scratching at the ears, redness, swelling, discharge (yellow, brown, or bloody), and a foul odor. Pain or sensitivity around the ears is also typical.

How do I clean my dog's ears safely?

Use a vet-recommended ear cleaner. Gently fill the ear canal, massage the base for 20-30 seconds, then let your dog shake out the excess. Wipe away debris with a cotton ball-never use Q-tips.

Are some dog breeds more prone to ear infections?

Yes. Breeds with floppy ears (e.g., Cocker Spaniels, Labrador Retrievers, Basset Hounds) or narrow ear canals (e.g., Shar-Peis, Bulldogs) are more susceptible. Dogs with allergies also have higher risk.