It's Stay Healthy Saturday! Why do dogs get puffy ears ? Turns out, if your dog is shaking his head and ears a whole lot, you may want to get it quickly addressed. Excessive shaking may lead to what's known as an "ear flap hematoma." Left untreated, a puffy ear may turn into an unsightly "cauliflower ear." Fortunately, this is just a cosmetic issue, but still, why allow those adorable ears to get deformed?