Why are African elephants’ ears larger than Asian elephants’ ears?

The primary reason African elephants have larger ears than Asian elephants is the need for thermoregulation. Because African elephants inhabit hotter climates, they must dissipate more body heat than their Asian counterparts to maintain an optimal internal temperature.12

The ears function as a cooling mechanism: blood vessels located near the surface of the skin release excess heat as the elephant flaps its ears, allowing the heat to transfer back into the environment. While both species use their ears to aid in hearing and communication, the significantly larger size of the African elephant's ears—which are often described as being shaped like the continent of Africa—is a specialized adaptation to their specific environmental demands.12