Ear infections (otitis) are one of the most common reasons dogs visit veterinarians. Understanding causes, prevention, and proper treatment can help keep your dog comfortable and reduce recurrence.

Why Dogs Get Ear Infections

Dogs have ear canals that are L-shaped, creating a trap for debris, moisture, and pathogens. Some breeds are anatomically predisposed: dogs with floppy ears, narrow ear canals, or excessive hair in the ears.

Causes of Ear Infections

Bacterial infections are typically secondary to inflammation. Yeast (Malassezia) thrives in warm, moist environments. Allergies to food or environmental triggers often underlie recurrent infections. Foreign bodies like foxtails or grass awns can cause infection. Ear mites cause intense itching and dark discharge.

Recognizing an Ear Infection

Common signs include: head shaking or tilting, scratching at ears, odor from ears, redness or swelling of the ear canal, discharge that may be brown, yellow, or bloody, crusting or scabs in the ears, pain when ears are touched, and hearing loss in severe cases.

Home Ear Care

Regular cleaning helps prevent infections. Use only veterinarian-approved ear cleaners. Squeeze cleaner into the ear canal and massage the base of the ear to break up debris. Allow your dog to shake their head, then wipe away visible debris with cotton balls or gauze.

Never insert cotton swabs or objects deep into the ear canal.

Veterinary Treatment

Your veterinarian will examine the ear canal and may take a sample to examine under a microscope. This identifies whether bacteria, yeast, or mites are present.

Treatment typically includes medicated ear drops containing antibiotics, antifungals, and anti-inflammatory medications. For severe cases, oral medications may be prescribed.

Preventing Recurrence

Address underlying allergies if present. Keep ears dry, especially after swimming or bathing. Regular cleaning frequency depends on your dog’s risk factors. Remove excess hair from ear canals in breeds that grow hair there.

Dogs with recurrent infections may need diagnostic testing to identify underlying causes.

When to See a Veterinarian

Schedule an appointment if you notice signs of infection, if your dog is in pain, if symptoms don’t improve with home care, or if infections recur frequently.

Veterinary Disclaimer: This article is for educational purposes only and is not a substitute for professional veterinary advice.