Why do elephants have big ears?
Elephants have big ears mainly to stay cool. Their ears are full of blood vessels, and flapping them helps release body heat in hot climates.
An elephant's huge body makes heat, but it has no sweat glands like ours. Blood flowing through the thin skin of the ears cools down as air moves over it, especially when the elephant flaps its ears. The cooled blood then flows back into the body.
African elephants, which live in hotter, more open habitats, have much larger ears than Asian elephants. The ears of African elephants are often said to be shaped a bit like the continent of Africa.
Ears for talking
Elephants also use their ears to communicate. Spreading their ears wide makes them look bigger when they feel threatened. Their hearing is excellent, and they can detect very low sounds that humans cannot hear.
Did You Know?
Elephants also cool off by spraying water and mud over their bodies with their trunks. The mud acts like sunscreen and helps keep insects away.