Elephants are a family of large, plant-eating mammals known collectively as elephants and mammoths. They are large terrestrial mammals with snouts transformed into proboscis, and teeth transformed into tusks. Most genera and species in this family are extinct. Only two genera, Loxodonta and Elephas, are still alive

Three species of elephants are recognized: the African prairie elephant (Loxodonta africana), the forest elephant (Loxodonta cyclotis) of sub-Saharan Africa and the Asian elephant (Elephas maximus) of South and Southeast Asia. African elephants have larger ears, a concave back, more wrinkled skin, a sloping belly, and two finger-like extensions at the tip of the trunk. Asian elephants have smaller ears, a convex or horizontal back, smoother skin, an occasional transverse belly with a central bulge, and an extension at the tip of the trunk. The ridges at the molars are narrower than in Asian elephants while African elephants are diamond shaped. Asian elephants also have raised bumps on their backs and some non-pigmented spots on their skin.

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Elephants are the largest mammals in the world alive today. The heaviest male elephant weighed 12 tons but was shot down in 1974 in Angola. There are also the smallest species of elephants with normal sizes such as calves or large pigs.

Elephants have a large head with a trunk and two tusks. Elephant is an animal with 4 big legs to be able to bear the weight of the body.

The foot bones of elephants are protected by a cushion. The flat soles are quite thick, the soles of the feet contain elastic fibers that help elephants walk without making noise.

Ivory is considered as the 2 upper front teeth turned into. When the ivory begins to grow, there will be a layer of enamel covering the ivory layer. Over time, the larger the dentin, the thinner the protective enamel layer will be. The tusks will develop in stages, the older the elephant, the bigger the tusks.

Elephants have grinding teeth at the back of the mouth, when the old grinding teeth are worn away, a new set of grinding teeth will grow. The whole life of the elephant has up to 6 sets of grinding teeth, by about 55 years of age the grinding teeth will eventually wear down and disappear.

The trunk is the nose of the elephant, boneless and replaced by muscle tissue. There is a duty like the fingers feel. The trunk is used to drink water, used to breathe, when drinking water, elephants will suck water with the trunk and then blow it into the mouth.

Elephant trunk has up to 4 muscular valves, so the trunk is very ingenious. Elephants use their trunks to break branches, or to pick fruits from trees. Their trunks are quite sensitive, male elephants use their trunks to flirt with the female, and female elephants use their trunks to caress baby elephants.

An average elephant sleeps only 2 to 3 hours a day. Adult elephants need up to 300kg of food and 160 liters of water per day. Elephants can detect rain up to 150 miles away, can smell water 20 miles away.

The brain of an elephant can weigh up to 5kg, but the sperm of an elephant is less than that of a mouse.