How many years does an elephant live in the wild?

How to get close to this number

Body size is the single best predictor of lifespan across mammals, and it is a reliable one. Small animals live fast and briefly; large ones live slowly and long. Place an elephant at the top end of the land-mammal size range, note that the largest mammals live for decades rather than years, and you arrive close to the answer using a rule that works for almost every species you could be asked about.

People tend to guess too high, because elephants carry a cultural association with extreme old age. In practice their lifespan is comparable to a human's a century ago, as the explanation notes — long by animal standards, unremarkable by modern human ones. The association comes from their memory and their social continuity rather than from unusual longevity.

The genuinely unusual fact is the one in the explanation: females live long past the age at which they stop reproducing. That is rare in nature and it has a function, because an old matriarch carries knowledge of water sources and routes that the herd depends on in a drought. It also means a single lifespan figure hides an important asymmetry, and that wild and captive figures differ enough that the setting always needs stating.