Ear Mites in Cats and Dogs
A highly contagious surface mite infestation of the ear canal, most common in kittens, puppies, and cats with outdoor access.
Overview
Otodectes cynotis is a surface-dwelling mite that lives in the ear canal and spreads easily through direct contact between animals. It is especially common in young animals and multi-pet households.
Clinical signs
- Intense ear itching and head shaking
- Dark, dry, "coffee-ground"-like debris in the ear canal
- Skin excoriation around the ears from scratching
- In severe cases, an aural hematoma from vigorous head shaking
Diagnosis
- Otoscopic exam, often directly visualizing the mites
- Microscopic exam of ear debris (a mineral oil prep) showing mites or eggs
Treatment
- Topical or systemic parasiticide treatment (such as selamectin or moxidectin-based products)
- Thorough ear cleaning
- Treating all in-contact pets in the household, since ear mites spread easily between animals
Prognosis
Excellent with appropriate treatment. Reinfestation is common if not every pet in the household is treated at the same time.
This page is general reference information for educational purposes. It is not a substitute for an individual clinical assessment, current formulary guidance, or the judgment of a licensed veterinarian treating a specific patient.
Frequently asked questions
Can ear mites spread to other pets in the house?
Yes, they are highly contagious between cats and dogs through direct contact, which is why vets typically recommend treating all pets in the household, not just the one showing symptoms.
Can humans get ear mites from pets?
It is very uncommon and, if it happens at all, causes only mild, temporary irritation. Ear mites are primarily a pet-to-pet parasite.