Dog Ear Infection Medicine Why do cats and dogs ears so commonly encounter difficulties and require dog or cat medicine for ear infections? The answer lies in the anatomy. If scientists wanted to design a perfect incubator for growing and sustaining microorganisms and parasites, they'd end up with a dog or cat ear. I'm not talking about the ear flap, that floppy flag on the bounding Cocker Spaniel and the erect sound reflectors standing atop you cat's head. The earflap is called the pinna and rarely presents problems for the pet. But that the tissues at the base of the pinna and continuing down into the ear canal and eventually ending at the ear drum that is a perfectly designed incubator, a perfect environment for microscopic life! If that area gets enough air ventilation, does not have folds of tissue whose surfaces contact one another, and isn't assaulted by dirt or irritating liquids, a small and balanced population of bacteria exists naturally. But nature's designs, although perfect for some organisms, may be destructive for another. Let's take for example the Cocker Spaniel. Through years of breeding the Cocker has evolved an ear canal that is rather long and often even folds upon itself before reaching the ear drum. And this can restrict the drying effects of airflow. If water gets into the ear canal, which doesn't necessarily create any problems, that water has to evaporate to disappear. Because of restricted airflow and the high humidity environment of the deep ear canal, that water remains present much longer than it would in a dog with an open and airy ear canal. As mentioned, there are normal types and numbers of bacteria in any ear canal. When the wrong kinds of bacteria like Staphylococcus and Pseudomonas meet with the right conditions such as lots of moisture, oils, dirt and secretions these bacteria can overwhelm the normal environment and lead to infections and other related ear problems which then require dog medicine for the ear infection. |