

Ear mites, or Otodectes cynotis, are tiny parasites that can cause significant discomfort and irritation. These microscopic pests live inside your dog’s ear canal, where they feed on wax and oils.

They are highly contagious, spreading easily from one dog to another. Plus, they develop rapidly.
Stage | Descrption | Timeframe |
|---|---|---|
Egg | Adult females lay eggs in the ear canal | Day 1-4 |
Larva | The larva hatches and feeds on ear debris | Day 4-7 |
Nymph | Larva molts into eight-legged nymphs | Day 7-16 |
Adult | Mites reach adulthood and begin reproducing | Day 16+ |
The good news is that an ear mite infestation can be treated, helping dogs regain the once-beloved comfort. In this blog, we’re going to talk all about ear mites in dogs, from how they spread to how we can prevent them.
How Do Dogs Get Ear Mites?
Next, let’s discuss how these parasites spread so we can know how to stop them.
Direct Contact
The most common way dogs get ear mites is through close contact. If your dog plays, sleeps, or interacts with another animal that has ear mites, the parasites can quickly transfer to them. This means that dogs in shared spaces, such as shelters and kennels, are at a higher risk.
Shared Objects
Shared belongings, such as blankets, bedding, brushes, and grooming tools, can also be ways for ear mites to spread. If even just one pet has ear mites, it’s easy for them to spread the parasites through these items.
Mother to Puppy
The nursing and nurturing period serves as an ideal opportunity for the ear mites to transfer from the mother to her puppies.
How Do You Tell if a Dog Has Ear Mites?
Even if ear mites are microscopic, the symptoms they cause can be significant and severe. These include:
Persistent Scratching and Head Shaking. This is usually the first red flag. Affected dogs will excessively scratch and shake their heads to try relieve the irritation. Some will rub their ears against furniture and walls.
Dark Ear Discharge. There will be a thick, dark brown discharge inside the ear of dogs with ear mites. This often resembles coffee grounds.
Foul Odor. Ear mites in dogs can also cause a strong and unpleasant odor.
Redness and Inflammation. The ears may appear red, swollen, and inflamed. In advanced cases of irritation, the ears may look raw.
Hair Loss. Excessive scratching and rubbing can lead to bald patches in the affected areas.
Behavioral Changes. Because of the constant irritation and discomfort, some dogs will become more irritable and uneasy.

What Happens if Ear Mites in Dogs Are Left Untreated?
Untreated cases can lead to severe and long-term pain for dogs, with a high chance of even more issues. These include:
Severe ear damage
Long-term ear infection
Loss of hearing
Ruptured eardrums
Aural hematoma
Extreme discomfort
Frequently Asked Questions
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