What do the ears of a dog infected with ear mites look like? - briefly
The ears usually contain a dark, waxy debris that looks like coffee grounds, along with redness, swelling, and a strong odor. The canal often appears inflamed, and tiny white or black mites may be visible within the discharge.
What do the ears of a dog infected with ear mites look like? - in detail
The external ear canal of a canine afflicted with otodectic mange presents several characteristic signs. The skin lining the canal becomes inflamed, producing a reddish or pinkish hue that may extend to the outer pinna. A thick, dark exudate accumulates; it is commonly described as a waxy, coffee‑ground or black‑brown debris that adheres to the hair and the canal walls. This material often emits a strong, unpleasant odor due to bacterial overgrowth secondary to the infestation.
Microscopic examination of the discharge reveals numerous live mites, their translucent bodies measuring 0.2–0.4 mm, along with eggs and fecal pellets. The pellets appear as tiny specks of white or gray sand, frequently mixed with the dark crust. As the condition progresses, the following observable changes occur:
- Hair loss on the inner ear flap and surrounding skin, caused by scratching and self‑trauma.
- Scabbing and ulceration where the skin has been repeatedly irritated.
- Swelling of the ear canal, which may narrow the passage and impede hearing.
- Secondary bacterial or yeast infection, indicated by a pungent smell and increased discharge volume.
In severe cases, the ear canal may become obstructed, leading to a noticeable flattening of the ear flap and reduced mobility. Palpation of the affected area often elicits pain, and the dog may exhibit frequent head shaking or ear scratching. These visual and tactile cues together provide a comprehensive picture of the ear’s condition when ear mites are present.