Panting in the heat is normal, but if your dog is panting even in cold weather, it could be a sign of heart disease, lung infection, or anxiety disorder. Many times, owners think it's stress, but deep down, they're experiencing an oxygen shortage. In this post, you'll learn the difference between normal vs abnormal panting, emergency signs, and what kind of cooling, hydration, and diet support can help control your dog's breathing. Difficulty breathing = life risk — no time to delay