How to Spot and Treat Dog Ear Infections

Dogs12 April 20262 min read
🐾 Veterinary Disclaimer: This article is for educational purposes only and does not replace professional veterinary advice. All medical content is reviewed by Dr. Sarah Mitchell, BVSc MRCVS. Always consult your registered veterinary surgeon if your pet shows signs of illness.
🔄Last Updated: 12 April 2026

[quick_answer title=”Medical Disclaimer”]The information in this article is for educational purposes only and is not a substitute for professional veterinary diagnosis or treatment. Always consult your vet for medical advice regarding your pet.[/quick_answer]

Why Are Dog Ears So Prone to Infection?

The canine ear canal is “L-shaped,” meaning it travels vertically downwards and then takes a sharp 90-degree turn horizontally. This shape creates a dark, warm, and often moist environment perfectly suited for yeast and bacteria to overgrow.

Breeds Most at Risk

Dogs with floppy, heavy ears (Cocker Spaniels, Basset Hounds) naturally lack airflow to the canal. Dogs that swim frequently (Labradors) or breeds with excessive hair in the ear canal (Poodles) are extremely susceptible.

Signs of Otitis Externa (Ear Infection)

  • Intense head shaking and ear scratching
  • Red, inflamed ear flaps
  • Foul, yeasty odour coming from the ear
  • Dark brown, yellow, or bloody discharge
  • Pain or yelping when the ear is touched

Treatment Protocol

Never put anything in an infected ear without veterinary approval. If the eardrum is ruptured, certain cleaners and drops will cause permanent deafness. Your vet will look down the ear with an otoscope and prescribe targeted antibacterial/antifungal drops and a safe ear wash.

Prevention

After your dog swims or is bathed, thoroughly dry the inside of the ear flap. Use a vet-approved, drying ear cleanser routinely if your dog is prone to flare-ups.

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Dr. Sarah Mitchell

BVSc MRCVS

Dr. Mitchell is a practising veterinary surgeon with 12 years of clinical experience at a mixed-practice surgery in the West Midlands. She qualified from the Royal Veterinary College in 2014 and holds a certificate in small animal medicine. Sarah reviews all our health, nutrition, and breed-specific medical content.

📋 Veterinary Reviewer 🎯 Small Animal Medicine