What is the longest lifespan of any mammal?

The longest lifespan of any mammal is held by the bowhead whale (Balaena mysticetus), which can live over 200 years. These whales are native to the Arctic and sub-Arctic regions and are known for their ability to survive extreme cold and their remarkable resistance to disease. Their longevity is attributed to slow metabolic rates, genetic adaptations, and an environment with relatively few predators. Bowhead whales are among the oldest living animals on Earth.