Deal With the Underlying Issue
Healthy adult dogs with “normal” ear anatomy almost never get ear infections. In most cases, a pet’s ear infection should be viewed as a symptom of an underlying condition.
Many people think ear mites might be to blame, but almost every case of ear mites I’ve diagnosed has been in a kitten. Puppies can also get ear mites, but if you have an adult dog or cat that has not been in contact with kittens or puppies with ear mites, the chances that they have mites is very small.
A few things that can cause dog ear infections include: