Dog ear

Ear canal tumors in dogs are abnormal growths that can arise from any part of the ear canal.

Otitis externa is inflammation of the external ear canal and is often referred to as an ear infection. Ear infections and otitis externa are common in dogs.

Inflammation of the middle and inner ear affect the parts of the ear that are behind the eardrum. In dogs, this form of inflammation is usually caused by bacterial infection, which most often spreads to these structures from the external ear.

The nasopharyngeal tract is a conduit that connects the throat with the nasal cavities and the middle ear. Sometimes pinkish-white masses, known as polyps, grow in the nasopharyngeal tract in dogs. 

Ear mites (Otodectes cynotis) are a contagious parasite that live in the ears of their hosts. This parasite resembles a small tick, but is much smaller; too small to distinguish with the naked eye.

Deafness in dogs refers to the partial or total loss of hearing in one or both ears. Deafness can occur from a variety of reasons such as heredity, birth defects, infection, trauma, blocked ear canal, or old age. Deafness in dogs is actually quite common.