In the context of canine longevity, lifespan encompasses the entire duration of a dog's life, which can vary significantly between breeds and individual dogs. Generally, smaller breeds tend to live longer than larger breeds, with some small dogs reaching into their late teens, while larger breeds may only live around 7 to 10 years. Lifespan is influenced by a variety of factors, including genetics, diet, exercise, and preventive health care practices. Understanding these influences can help dog owners tailor their care approaches to maximize their pet's longevity. Additionally, the concept of lifespan extends beyond just the number of years a dog lives; it includes the quality of those years as well. A longer lifespan is most beneficial when accompanied by a good quality of life, meaning that dogs maintain their health, vitality, and happiness throughout their years. Emerging research in geroscience is exploring ways to potentially extend both lifespan and healthspan—the period of life spent in good health—through innovative interventions, including veterinary longevity pills that aim to slow aging processes in dogs.