It's not unusual for dogs to get ear infections, as the anatomy of the dog ear encourages moistness. Both bacteria and yeast thrive in dark, damp environments. Often dogs will have floppy ears that cover the ear opening, keeping the internal ear moist and dark. Dogs with ears that stand up straight can get ear infections, too, since the inner ear of a dog is a long, mostly horizontal structure. Animals with a more vertical ear may not suffer ear infections as frequently as dogs, since moisture can drain down and out of the canal. Sporting dogs who spend a lot of time in the water, and who also have floppy outer ears, may be at the greatest risk for ear infections.
Dogs will exhibit many symptoms when they have an ear infection. Look for the following signs:
-Shaking or tilting the head
-Scratching, rubbing, or otherwise trying to stimulate the ear
-Foul odor emanating from the ear
-Discharge
-Swelling
-Ear is warm to the touch
-Inflammation of the ear
-Missing fur due to scratching