Just like a human would instinctively scratch at an itch, dogs will instinctively shake their heads to relieve the discomfort. While head shaking can be normal for your dog occasionally, frequent head shaking is a sign of an underlying issue, typically in your dog’s ears. If your dog is shaking his head, here are a few potential causes, treatment options, and ways to prevent issues in the future. 5 Reasons Your Dog Could Be Shaking Their Head While all of your dog’s head-shaking behaviors stem from itchiness or discomfort, the underlying cause for those symptoms can vary. Here are 5 reasons