Why Do Cocker Spaniels Keep Getting Recurrent Ear Infections? Causes, Treatment, and Prevention Methods

As a Cocker Spaniel owner, raising one is truly a joyful experience—they have gentle temperaments, elegant appearances, are highly obedient, and are extremely loyal. But this joy also comes with its share of worries: Why does my Cocker Spaniel keep getting recurrent ear infections? Even though I clean their ears thoroughly, why do they keep getting otitis?

Indeed, ear health issues in Cocker Spaniels are a common concern for many dog owners. Cocker Spaniels have distinctive floppy ears, which make them look very cute but also increase their risk of ear infections and otitis externa.

Sources such as the Merck Veterinary Manual and the Royal Veterinary Center point out that the Cocker Spaniel’s long, floppy ears cover the entrance to the ear canal, reducing airflow and trapping moisture. This keeps the ear canal in a warm, damp, and relatively enclosed state—an ideal environment for bacteria and yeast to multiply and cause otitis externa.

Why Are Cocker Spaniels Prone to Ear Infections?

When it comes to Cocker Spaniels, most people think of their iconic, beautiful floppy ears—but this is also one of the main reasons why they are prone to ear infections.

• Unique structure of the floppy ears—A Cocker Spaniel’s large, floppy ears cover the entrance to the ear canal, restricting airflow. This makes it difficult for moisture to drain naturally from the ears, causing moisture to accumulate and creating a warm, damp environment inside the ear canal. This warm, damp, and enclosed environment is an ideal breeding ground for yeast and bacteria. Once these microorganisms overgrow, the dog’s ears become infected.

• Earwax buildup—A dog’s ear canal has a unique L-shaped structure. The only part visible to the human eye is the vertical outer ear canal; at the bottom, this passage makes a 90-degree turn and runs horizontally toward the inside of the head, forming the horizontal ear canal. This structure makes it difficult to detect and remove earwax once it forms inside, leading to buildup that can cause inflammation and infection. For this reason, many veterinary organizations, including Merck, do not recommend that owners use cotton swabs to clean deep inside the ear canal themselves, as this may push earwax further in and even cause damage to the ear canal.

• Allergies—Allergies are an important factor often overlooked by many pet owners. Allergens in the environment, food, and pet supplies can cause skin allergies and ear infections in dogs. For Cocker Spaniels with recurrent ear infections, identifying potential allergens is also a crucial step.

Besides Cocker Spaniels, Which Other Dogs Are Prone to Ear Infections?

Cocker Spaniels are prone to ear problems due to their floppy ears, but they are not the only high-risk breed.

Dogs with the following characteristics are also prone to ear infections:

Dogs with floppy ears: such as Basset Hounds, Golden Retrievers, Labradors, Cocker Spaniels, and Beagles. Their floppy ears trap moisture inside the ear canal, creating an ideal environment for yeast and bacteria to thrive.

Long-haired dogs and dogs with hairy ear canals: such as Poodles and Maltese. The thick hair inside their ear canals acts like a sponge, absorbing moisture and preventing the ear canal from drying out.

Dogs that enjoy water activities: such as Newfoundlands and water spaniels. These dogs are frequent visitors to pools and beaches, and their frequent exposure to water increases their risk of ear infections.

It’s important to note that any dog can develop an ear infection; breed is just one of several contributing factors.

What are the symptoms of an ear infection in a Cocker Spaniel?

• Frequent head shaking, scratching the ears with paws, or rubbing the ears against the floor or furniture (it’s normal for dogs to shake their heads occasionally, but if this behavior occurs repeatedly every day, it usually indicates irritation or discomfort in the ears)
• Abnormal discharge in the ear canal, such as brown or black earwax, and possibly yellowish-green pus
• A foul odor—such as a sour, fishy, or musty-sweet smell—when sniffed closely
• Noticeable redness and swelling of the ear flap or around the ear canal, which feels hot to the touch
• Resistance to being touched by the owner or even aggressive behavior

A quick tip:

Since symptoms of some ear conditions in dogs may overlap, it’s impossible to accurately determine the cause of an infection based on appearance alone. If you notice any of the above signs in your Cocker Spaniel, the safest course of action is to consult a veterinarian for professional advice and guidance.

Is Otitis in Cocker Spaniels Caused by a Yeast Infection or a Bacterial Infection?

Many dog owners believe the cause of an infection is straightforward, but in reality, ear infections in dogs can be caused by different types of microorganisms:

1. Bacterial infection

2. Yeast overgrowth

3. A combination of both

Next, I’ll explain the differences between bacterial and yeast infections.

Yeast Infection

Yeast is a type of fungus, and the yeast that infects a dog’s ears is usually an overgrowth of Malassezia. Yeast naturally exists in small amounts on a dog’s skin and in its ears, but when the environment is damp, the dog’s immunity is compromised, or the skin barrier is damaged, it can overgrow and cause an infection.

The main symptoms of a yeast infection include:

Oily ears

Dark brown or brown earwax in the ear canal

Unpleasant odors, such as a musty or sweet smell

Bacterial Infections

Bacterial ear infections (caused by Staphylococcus aureus, Pseudomonas aeruginosa, etc.) typically occur when the skin inside a dog’s ear canal is already broken or injured. The main symptoms of such infections include:

Yellow or green discharge (which may be pus)

Redness and swelling of the skin inside the ear canal, accompanied by flaking and scabbing

A fishy or sour odor

Noticeable pain upon touch

Summary: If your dog shows symptoms of an ear infection, it is best not to attempt to diagnose the type of infection yourself or purchase ear medication on your own. In literature from MSD Animal Health and other sources specializing in canine ear diseases, Malassezia yeast and Staphylococcus are listed among the most common pathogens causing otitis externa in dogs.

Therefore, both the Merck Veterinary Manual and the clinical website RexVet emphasize that veterinarians must identify the specific pathogen through otoscopic examination and cytological analysis of ear swabs in order to select the appropriate antibacterial or antifungal medication.

Can Cocker Spaniel Ear Infections Be Treated at Home?

The answer is you can perform general daily ear care at home, but if an ear infection has already developed, it’s recommended to have your dog examined by a veterinarian before treatment. For your pet’s health, please do not make your own judgments or attempt to treat your pet’s ear problems on your own.

Safe Home Care Methods

Use a pet-specific ear cleaning solution

You can keep a pet-specific ear cleaning solution on hand at home to check and clean your dog’s ears regularly (based on your dog’s condition and your veterinarian’s advice). However, please note that more frequent cleaning isn’t necessarily better! Excessive cleaning can irritate the ear canal and disrupt the natural bacterial balance in your dog’s ears.

Keep the Ears Dry

This is a crucial step. After a bath or swim, or upon returning from an outing on a rainy day, be sure to dry your Cocker Spaniel’s ear flaps promptly and check the ear canal for any remaining moisture. A Cocker Spaniel’s biggest enemy isn’t earwax—it’s prolonged moisture in the ear canal.

Methods Not Recommended

Do not use long cotton swabs to probe deep into your dog’s ear canal, as this will push moisture and dirt further in.

Do not use human medications to treat your dog’s ear conditions without consulting a veterinarian.

Do not rely on any folk remedies, such as applying white vinegar, alcohol, or hydrogen peroxide directly into the ear, as this can damage the skin of your dog’s ear canal and worsen discomfort.

Do not use coconut oil or olive oil, as these substances increase the risk of residue remaining in the ear canal

When You Must See a Veterinarian

When pet owners notice something wrong with their dog, their first instinct is often to monitor the situation at home for a few days. However, if you observe any of the following symptoms, you can no longer wait—you must take your dog to a veterinary clinic for a thorough examination. If you continue to wait, the inflammation will worsen, causing serious damage to your dog’s ear health.

• If your dog enters a constant state of defense, baring its teeth at you or displaying aggressive behavior, this indicates that its pain has exceeded its tolerance limit.
• If there is a large amount of abnormal discharge or a strong odor coming from your dog’s ear canal, this indicates that the infection has become quite severe, and professional examination and treatment are essential at this point.
• If your dog constantly shakes its head or scratches its ears, this indicates persistent pain or irritation. Continued scratching can damage the skin inside the ear canal, further aggravating the inflammation.
• If your dog exhibits head tilting or balance issues, the infection may have spread to the middle or inner ear; seek veterinary care as soon as possible.

How to Treat an Ear Infection in a Cocker Spaniel?

If your Cocker Spaniel has an ear infection, the veterinarian will use an otoscope to examine the deep parts of the ear canal and collect ear discharge for microscopic examination. Based on the results, the veterinarian will prescribe a targeted ointment (the medication varies depending on the type of infection) and provide you with cleaning instructions.

The treatment course typically lasts about 2–4 weeks. Once the medication course is complete, the veterinarian will schedule a follow-up appointment to ensure the medication is effective and to provide recommendations for the next steps. It is essential that you strictly follow the veterinarian’s instructions and complete the entire treatment course, as the infection may still be present even after symptoms disappear; therefore, you should not interrupt treatment prematurely.

If your dog’s infection persists or recurs without improvement, the most important step is to identify the source of the infection—such as allergies or excessively long ear hair. Once the source is identified, treatment should focus on addressing these underlying causes.

How to Manage Chronic Otitis in Cocker Spaniels Long-Term?

According to research by the Universities Federation for Animal Welfare, chronic otitis externa in cocker spaniels is considered a significant health issue for the breed. The key to long-term management lies in controlling allergies, improving the ear canal environment, and establishing consistent ear care routines. Some Cocker Spaniels experience ear infections every year. The most important thing is to identify the cause of recurrent infections and establish long-term care habits. Prevention is always better than treatment; by following these two steps, most dogs can reduce the frequency of ear infection recurrences.

For the long-term management of ear infections in Cocker Spaniels, you should focus on the following:

• Regularly check your dog’s ear canals and maintain good, consistent communication with your veterinarian
• Keep your dog’s ear canals dry and promptly remove any debris from the ears
• Control potential allergens and avoid environments that trigger allergies
• Seek veterinary treatment immediately if you notice any ear problems; do not believe in or use any folk remedies
• If the hair inside the ears is too long and obstructs airflow, trim it appropriately as advised by a veterinarian or professional groomer to ensure the ear canals remain well-ventilated

FAQs

1. Will a Cocker Spaniel’s ear infection go away on its own?

Mild ear irritation may resolve on its own, but a true ear infection usually does not. You should take your dog to a veterinary clinic for an examination to determine the cause of the problem and the appropriate treatment plan

2. Why do Cocker Spaniels suffer from recurring ear infections?

A Cocker Spaniel’s ears cover the ear canal, restricting airflow. This makes it difficult for moisture to drain, creating an ideal environment for yeast and bacteria to multiply. Once these microorganisms overgrow, your dog’s ears are at risk of infection.

3. How can I care for my Cocker Spaniel’s ears at home?

You can use a veterinarian-recommended pet ear-cleaning solution to clean your dog’s ears at home, but be sure to use gentle techniques.

4. How often should I clean my Cocker Spaniel’s ears?

The frequency of ear cleaning for a Cocker Spaniel depends on the dog’s specific condition and your veterinarian’s advice. Cleaning too often or too infrequently can harm your Cocker Spaniel’s ears.