Decoding the Longevity Mysteries: Top 18 Factors Influencing Pet Lifespans in the Animal Kingdom

Size and Metabolism

Interestingly, size and metabolic rate also have a significant impact on an animal's lifespan. Generally, larger animals tend to live longer than smaller ones. This is because larger animals usually have slower metabolic rates, which means they age slower. However, there are exceptions to this rule, such as the case with dogs, where smaller breeds tend to live longer.