Do big dogs really live shorter lives than small breeds? This question is common among dog owners, and the answer is more complex than it may seem. In this video, we explore the biological reasons behind lifespan differences in dogs, focusing on growth rate, metabolism, body size and long-term health. Using well-known examples like the Great Dane, we explain why large breeds tend to age faster, while smaller dogs often live longer. This video is not about ranking breeds, but about understanding how size influences the pace of life within the same species. If you share your life with a large dog, or simply want to better understand canine longevity, this guide offers a clear and thoughtful explanation based on science, not myths. Subscribe to Pet Pals for more stories, insights and guides about the dogs we love. #DogLifespan #largedogbreeds #DogAging