Does your dog seem constantly itchy? Are they always licking their paws, shaking their head, or dealing with recurring ear infections that never quite go away? You're not imagining it, and you're not alone. Allergies are one of the most common health issues in dogs, and one of the most misunderstood.The good news: once you identify what's triggering your dog's symptoms, there are real, effective ways to help them feel better. Here's what you need to know.