Kaia, our family’s white Lab, has been prone to ear infections since she was a puppy. If you have lived through that same cycle with your dog, you know exactly what we are talking about. The head shaking. The paw going to the ear. The vet visit that follows. It is part of the rhythm of dog ownership for a lot of us, and it does not have to be a mystery.
Ear infections are one of the most common reasons dogs end up at the vet, and also one of the most treatable. The challenge is usually not the infection itself but recognizing it early and knowing what actually helps versus what just keeps the cycle going. We did the research, and this is what we found.
Why Dogs Get Ear Infections
A dog’s ear is built differently than a human ear, and those differences matter. The ear canal in dogs is longer and has a natural L-shape that makes it easy for moisture and debris to get trapped. That warm, dark environment is exactly what certain bacteria and yeast love. When the ear canal stays moist, whether from swimming, bathing, or humidity, the skin’s natural defenses can break down and an overgrowth can take hold.
Allergies are a major driver of ear infections in dogs, even without obvious skin symptoms elsewhere. According to the AKC, allergies lead to ear disease in about 50 percent of dogs with allergic skin disease and up to 80 percent of dogs with food sensitivities. A dog with environmental allergies or food sensitivities can have inflammation in the ear canal that creates the perfect conditions for an infection. This is one of the most overlooked causes, especially if your dog gets ear infections over and over with no clear trigger.
Breed matters too. Dogs with floppy ears, like Labradors, Spaniels, and Basset Hounds, have less air circulation in the ear canal, which traps moisture. Breeds with narrow ear canals, like Shar-Peis, can also be more prone. Dogs with hairy ear canals, such as Poodles and Schnauzers, may be more prone to debris and wax buildup. None of this means your dog will definitely have problems, but it does mean some dogs benefit from a little more attention to ear health.
If your dog deals with seasonal allergies that also affect their ears, our spring allergy survival guide covers the connection between allergy season and ear flare-ups.
Signs to Watch For
The earlier you catch an ear infection, the easier it is to treat. Early signs tend to be subtle. Your dog might shake their head more than usual or tilt it to one side. They might paw at their ear or scratch it against furniture. You might notice a mild odor or some redness inside the ear flap. These are the moments to take a look, not wait and see.
Advanced infections are harder to miss. You might see discharge that is brown, yellow, or bloody. The ear might smell strongly. The ear flap itself can become swollen or crusty, and your dog may pull away when you touch their head. In severe cases, as the Merck Veterinary Manual notes, the ear canal thickens from chronic inflammation and actually narrows, making future infections more likely and harder to treat. That is exactly the kind of situation that early care can prevent.
Types of Ear Infections
Not all ear infections are the same. Knowing the difference helps you understand why the vet chooses a specific treatment.
Yeast infections are common, especially in dogs with floppy ears or those who spend a lot of time in water. Yeast lives naturally on the skin, but when the ear environment gets warm and moist, it can multiply. Signs often include a dark brown or black discharge, a strong smell, and intense itching. Yeast infections can also make the skin in the ear look thickened or greasy.
Bacterial infections happen when bacteria that are not normally present in high numbers take over, usually because the skin barrier has been compromised. The discharge is often yellow or greenish, and the inflammation can be more aggressive. Bacterial infections may occur on their own, but they often develop secondary to an underlying problem such as allergies, moisture, or irritation.
Ear mites are a different category entirely. These tiny parasites live in the ear canal and cause intense itching and a characteristic dry, dark discharge that looks like coffee grounds. According to VCA Animal Hospitals, mites are highly contagious and animals become infested through direct contact with another infested animal. They are more common in puppies and outdoor dogs, and because they spread so easily, other household pets likely need treatment too.
What the Vet Will Do
If your dog shows up with an ear infection, the vet will look inside the ear with an otoscope to check the ear canal and eardrum. They will assess redness, swelling, discharge, and whether the eardrum is intact. If there is debris, they will likely take a sample and look at it under a microscope to determine whether the infection is yeast, bacterial, or something else. This step matters because treatment differs depending on the cause.
The vet may also clean the ear to remove buildup so medication can work properly. They may prescribe a topical medication, sometimes combined with a steroid to reduce inflammation and pain. In more severe cases, oral antibiotics or antifungal medications might be needed. If your dog has recurring infections, ask your vet about underlying causes, because allergies are the culprit more often than most owners realize.
Home Care and Prevention
The good news is that regular ear care at home can prevent a lot of infections from happening in the first place. For dogs with floppy ears, a history of infections, or those who swim regularly, routine ear cleaning makes a real difference. How often depends on your dog. Some benefit from weekly cleaning, while others only need it every couple of weeks. Your vet can help you figure out the right schedule based on your dog’s breed, ear shape, and history.
Use a vet-recommended ear cleaner. VCA Animal Hospitals warns that cleaners with hydrogen peroxide or alcohol can cause irritation in the ear canal, especially if the canal is already inflamed or ulcerated. The right cleaner will help dry out excess moisture and gently break down wax without burning or stinging.
The technique is straightforward. Squirt a small amount of cleaner into the ear canal, massage the base of the ear for about thirty seconds to loosen debris, and let your dog shake their head. Then wipe away the loosened material with a cotton ball or soft cloth. Do not use cotton swabs inside the ear canal, as they can push debris deeper and risk damaging the eardrum.
After swimming or bathing, drying your dog’s ears with a towel or a pet-safe drying solution prevents the moisture buildup that leads to infections. For dogs with hairy ear canals, ask your veterinarian whether hair removal is appropriate, since recommendations vary by dog.
If your dog is prone to ear infections, make ear checks part of your routine. Look for redness, smell for any odor, and watch for head shaking or pawing. Catching it early is always easier than treating a full-blown infection.
When to Call the Vet
If your dog is in visible pain, there is discharge from the ear, the ear smells bad, or your dog is pawing at their ear constantly, make the appointment. If your dog tilts their head persistently, loses balance, or seems to hear less well than usual, those are also reasons to be seen.
If the infection does not improve within a few days of starting treatment, go back to the vet. If it clears up and comes back within weeks, do not just treat it again at home. Recurring infections need investigation into the underlying cause, and as we mentioned, allergies are the most common one.
And if you have never cleaned your dog’s ears and you are not sure what you are looking at, ask your vet to show you the right way to do it before you try at home.
The Bottom Line
We know this is one of those topics that feels overwhelming when it is happening to your dog. The good news is that ear infections are manageable, and the routine care that prevents most of them is not complicated once it becomes a habit. Kaia has been dealing with this since she was a puppy, and the difference between a dog who gets quick treatment and one who ends up with chronic problems almost always comes down to catching it early and having a routine that works.
If your dog’s ear infections tend to flare up alongside other allergy symptoms, it is worth looking at the bigger picture. Our article on gut health and why it affects everything covers how the immune system and digestion tie into conditions like allergies and recurring infections.
This article is for general educational purposes and is not veterinary medical advice. If your dog’s ear infection symptoms are severe or worsening, consult your veterinarian for a proper diagnosis and treatment plan.
Samantha Tilton
I catch the things that are easy to miss. The small changes, the quiet signs, the details hiding in plain sight. I co-founded The Daily Dog because the best thing you can do for your dog is pay attention, and I write to help you know what to pay attention to.
