Medically reviewed by William Truswell, MD A lump behind the ear can have many possible causes. The most common include ...

Ear infections are a common occurrence for many dogs. This is especially true for breeds with floppy ears. My dog, Romeo, had several years where he was continually fighting an ear infection.

Many pet owners frequently deal with the common problem of ear infections in their dogs, which could be due to bacteria, yeast or ear mites. A variety of treatments can be used, however ...