Pet Corner

By Randy Kidd and D.V.M.
Published on September 1, 2005
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It’s a good idea to heed what our pets’ ears
have to tell us. In addition to listening, animals also talk with
their ears. By using dozens of ear muscles to transform and
mobilize their ear flaps into a pattern, many animals, especially
cats and dogs, have the ability to create a virtual dialogue. Ears
erect, for example, means, “I am alert and listening.”

In addition to their ability for two-way communication, an
animal’s ears have more basic functions — hearing and balance — and
either function can be disturbed by disease, age-related changes or
nerve disruption from various causes. The ears are a prime site for
disease, and are thus one of the first areas we veterinarians
examine.

Determine the Problem

Dogs with ear infections (medically known as otitis externa)
typically shake their heads and dig at their ears, and they may
roll along the ground to relieve the itch. There may be discharge
from the ear, along with an unpleasant odor.

Predisposing factors often instigate the infection. For example,
long ear flaps that trap moisture and heat help provide an ideal
environment for bugs to grow. Many cases of otitis are related to
allergies. Accumulation of earwax and oils in the ear canal creates
an environment that encourages yeast to grow.

Ear mites can occur in dogs, although not as often as they do in
cats, where mites account for about 50 percent of all ear
infections. Ear mites are small parasites that roam freely in the
ear, and they can drive a critter crazy — frantic ear scratching is
a common symptom. The mite-infested ear typically has a dry,
crumbly, blackish exudate that can be seen in the ear canal.

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