Why do dogs flap their ears?

A common cause for head shaking is otitis externa, an inflammation of the external ear canal. While ear mites, wax plugs, grass awns and other factors can cause the behavior, in most cases, there's an underlying allergy at work. ... In addition to head shaking, dogs with otitis may have red and swollen ears. read more

Ear problems are some of the most common reasons why dogs flap their ears excessively and also one of the most common reasons dogs visit the veterinarian. Numerous dogs suffer unpleasant and painful ear conditions for years on end. read more

Dogs with these lesions may shake their heads, causing the scabs to break open and bleed. Possible Culprit: Ear Hematomas. Sometimes all that head shaking can actually create problems. When tender ears slap against the hard skull, blood vessels within the pinna can break open, forming a pocket of blood known as a hematoma. read more

Most dogs do and that causes the inner ear to itch. It's their way of scratching it. You can go to Walmart, K-Mart or a pet store and get ear mite treatments for the dog in the pet section. It's not too expensive either and shoud be considered a regular part of doggie's maintainance. I have two chihuahuas, and they flap their ears (loudly!) many times a day, even though their ears are healthy. read more