Elephant

Elephants are the largest living land animals on Earth.

They belong to the family Elephantidae and the order Proboscidea. Currently, there are three recognized living species. These are the African bush elephant, the African forest elephant, and the Asian elephant. They are considered a keystone species. This means they have a massive impact on their environments. Because of their size and habits, they shape the habitats where they live.

An elephant's body is built for its massive size. Their trunk is a prehensile organ, meaning it can grasp and hold things.

They use it to bring food and water to their mouths. Their tusks are actually modified incisor teeth. These serve as tools for digging or moving objects, and also as weapons. Large ear flaps, or pinnae, help regulate body temperature.

Warm blood flows through tiny capillaries in the ears. By flapping their ears, elephants release excess heat into the air. This helps them maintain a steady internal temperature of about 36 °C.

There are distinct differences between the three living species. The African bush elephant has a concave back and very large, triangular ears.

The African forest elephant has smaller, more rounded ears and straighter tusks. The Asian elephant has a convex or level back and smaller ears.

Asian elephants also have a dish-shaped forehead with two large bumps. Their skin is often smoother with some blotches of depigmentation. These physical traits help them adapt to their specific homes in Africa and Asia.

Elephant history began millions of years ago in Africa.

The earliest members of the order Proboscidea, like Eritherium, lived 60 million years ago. These early relatives were much smaller than modern elephants. Around 18 to 19 million years ago, a major geological event occurred. The collision of Afro-Arabia with Eurasia allowed these animals to spread into Eurasia. Later, they moved into North America via the Bering Land Bridge. Over time, they evolved larger bodies, longer trunks, and specialized teeth.

Evolutionary changes helped elephants survive. Earlier ancestors had different tooth shapes, but modern elephantids developed parallel lophs.

These ridges allowed them to be more efficient at eating grass. Many extinct relatives once lived alongside them, such as mammoths and mastodons. Some ancient species, like Palaeoloxodon namadicus, were even larger than modern elephants. They could exceed 10 tonnes in body mass. This makes them contenders for the largest land mammals to ever exist.

Elephants live in complex social structures called fission–fusion societies.

This means multiple family groups come together to socialize. Females, known as cows, live in groups led by an oldest female called a matriarch.

Male elephants, or bulls, leave their families at puberty. They may live alone or with other males. Adult bulls often interact with female groups during musth. Musth is a state of increased testosterone and aggression. This state helps males gain dominance and reproductive success.

These intelligent animals face many modern challenges. African bush and Asian elephants are listed as endangered.

The African forest elephant is even more at risk, listed as critically endangered. The ivory trade is a major threat because animals are poached for their tusks. Habitat destruction and conflicts with local people also harm their populations. Despite these threats, elephants remain iconic in human culture. They appear frequently in art, religion, and literature across the globe.