The average lifespan of an outdoor cat is significantly shorter than that of an indoor cat. Outdoor cats typically live around 2 to 5 years due to increased risks such as accidents, fights, diseases, and predation. In contrast, indoor cats can live 12 to 15 years or more, benefiting from a safer environment, controlled diet, and regular veterinary care. This stark difference highlights the impact of lifestyle on feline health and longevity, underlining the importance of providing a secure and nurturing environment for cats.