When it comes to ear cleaning, we are focused upon the external ear canal. Ear wax and debris can easily build up in the ridges of the external canal. If irritation (otitis) takes place (either from buildup or from allergies), the canal can become infected. Lack of adequate air flow to the canal can expedite an ear infection. This is part of the reason dogs with long, floppy ears are prone to ear infections. However, some dogs also have an excessive amount of glands in their ear canals and produce too many secretions. A couple of common dog breeds with genetic predispositions to ear infections include Cocker Spaniels and Basset Hounds. Typically, dogs with ear infections will have an excessive amount of bacteria or yeast in the ears. External ear infections cause itching and pain. They can also lead to middle/inner ear infections that affect hearing and balance. In addition, because dogs with itchy or sore ears tend to shake their heads violently, they can rupture blood vessels in the ear flap and end up with a pocket of blood in the flap called a hematoma. Signs of an ear infection include odor from the ears, frequent shaking of the head, redness of skin inside ears, excessive scratching at ears, and excessive ear discharge/debris.
Regular cleaning can help prevent infections. Using an appropriate ear cleaner, you can release wax and debris from the canal and help dry the ear. Dogs can build up wax and debris at a faster rate than people. Some dogs have very little ear buildup and simply need their ears wiped out occasionally. Other dogs need thorough ear cleanings every week or two. Inspect your dog's ears regularly and talk to your vet about your dog's needs. Over-cleaning can cause irritation, but under-cleaning can make way for excessive buildup.