Why Does My Dog Keep Scratching His Ears? 7 Causes Every Pet Owner Should Know

If your dog won’t stop scratching his ears, it’s more than just annoying—it could be a sign that something’s wrong. Ear issues are one of the most common reasons dogs visit the vet, and ignoring the signs can lead to discomfort, infection, or even long-term damage.

So, why does my dog keep scratching his ears? The answer could range from something as simple as wax buildup to something more serious like an infection or parasite. Understanding what’s behind the scratching is the first step toward effective treatment—and lasting relief.

Here are seven common causes of excessive ear scratching every pet owner should know, plus what you can do to help.

1. Ear Mites

Ear mites are tiny, highly contagious parasites that live in the ear canal. Though they’re more common in puppies and shelter dogs, they can affect dogs of any age.

Signs include:

Constant scratching or head shakingA dry, crumbly, dark brown or black discharge (similar to coffee grounds)Inflammation or redness inside the ear

If you suspect mites, a vet can confirm the diagnosis and prescribe a treatment. Regular ear cleaning can help reduce debris and discomfort while preventing future infestations.

2. Wax Buildup

A little wax is normal and healthy, but too much wax can cause irritation and encourage infection. Some dogs, especially those with floppy ears or allergies, produce more wax than others.

If you’ve ever asked, “why does my dog keep scratching his ears even though they’re clean?”, the answer might be residual wax deep in the canal or recurring buildup.

3. Allergies

Allergies—whether environmental (like pollen or mold) or food-related—can affect a dog’s ears just like they affect skin and paws.

Look for these signs:

Redness or swelling inside the earsChronic ear infectionsItchy skin in other areas (paws, belly, face)

Allergy-related ear issues often require a combination of dietary adjustments, antihistamines, or anti-inflammatories from your vet. Keeping the ears clean with a gentle solution like Puainta® Natural Ear Cleaner can help reduce the risk of secondary infections caused by itching.

4. Yeast or Bacterial Infections

Warm, moist ears provide the perfect environment for yeast and bacteria to thrive. These infections are among the most common causes of ear scratching.

Symptoms include:

Foul odorDischarge (yellow, brown, or bloody)Red, inflamed ear canalsConstant head tilting or rubbing against surfaces

5. Foreign Objects or Debris

Grass seeds, sand, and other small particles can easily get stuck in a dog’s ear during walks or play. This physical irritation often triggers immediate and persistent scratching.

If your dog suddenly starts pawing at one ear, try to gently inspect it. Avoid using cotton swabs or tweezers, as this can push the object further in or damage the ear canal.

6. Ear Trauma or Injury

Scratches from rough play, insect bites, or even over-vigorous grooming can leave ears sore or inflamed. A dog might scratch an injured ear instinctively, making the problem worse.

If there’s visible swelling, scabbing, or sensitivity to touch, limit further irritation. Avoid harsh cleaners and choose something soothing—Puainta® Natural Ear Cleaner is formulated with chamomile and marigold oil to calm irritated skin without stinging.

7. Stress or Behavioral Issues

Not all ear scratching has a physical cause. Some dogs develop repetitive behaviors when they’re bored, anxious, or stressed. These actions can include licking paws, chewing fur, or scratching ears even when they’re clean.

If no medical issues are present. Providing more mental stimulation, structured routines, or consulting a behaviorist can help address underlying anxiety.

Choosing the Right Ear Cleaner: Why Pet Owners Trust Puainta

With so many ear care products on the market, it can be hard to know what’s truly safe and effective. That’s why many pet owners turn to Puainta®—a brand trusted by veterinarians and loved by dog owners for over 15 years.

Puainta® Natural Ear Cleaner is:

Alcohol-free and pH-balanced for sensitive earsMade with natural ingredients like chamomile oil, witch hazel, and marigold extractDesigned to break down wax, relieve itching, and restore balance to the ear canalBacked by a professional veterinary R&D team and crafted with pet safety in mind

Using Puainta natural ear cleaner regularly can support clean, healthy ears and reduce the risk of infections—especially in breeds prone to wax or moisture-related issues.

When to See a Vet

While many ear issues can be managed at home, some signs should never be ignored. These include:

Bleeding or discharge with a foul smellExtreme sensitivity to touchFrequent recurrence of infectionsHearing loss or balance problems

Always consult a veterinarian if symptoms escalate or don’t improve after cleaning.

Conclusion: Your Dog’s Ears Deserve Attention

If you've been wondering why does my dog keep scratching his ears, you’re not alone—and the answer isn’t always simple. From mites to allergies, to something as basic as wax buildup, there are many possible causes. But one thing is clear: regular ear care can exert an important effect on your dog’s comfort and health.

With Puainta as part of your pet’s grooming routine, you’re choosing a gentle, effective way to keep their ears clean, calm, and itch-free—day after day.