What are the biggest four-legged animals living on land?

Elephants are the biggest animals that live on land. (Some whales are bigger than elephants but whales live in the sea.) When born a baby elephant weighs about 91 kilograms. That is the weight of a grown man. It is about 91 centimetres high. When it reaches the age of six years, it is about 183 centimetres high. When it reaches the age of twelve years, it does not grow any more. It may then be 320 centimetres high. African elephants are bigger than Indian elephants. African elephants have much bigger ears.
    Elephants have very long noses which we call "trunks". No other animals have trunks as long as elephants. The elephant can use its trunk to smell things and it can also pick up things with the tip of its trunk. The tip of its trunk can be used like a hand. Can you pick up something with the tip of your nose?
    The elephant uses its trunk to feed itself. It likes m eat leaves, young juicy branches of trees, and fruits. It picks these with its trunk and puts the food into its mouth. When it wants a drink, it puts the tip of its trunk into some water. It fills its trunk and then blow the water into its mouth. The elephant washes itself in the same way. It fills its trunk with water and then blows the water over itself.
    Two of the elephant’s teeth are very long and strong. They are called "tusks". They use their tusks to dig up small trees and to dig in the ground for water. Elephants also use their tusks and trunks to lift heavy logs of wood. In some countries men catch wild elephants and teach them to work. After a while they are no longer wild. They become tame. They become very obedient. They do what their masters tell them to do. All day long they work patiently in the hot sun. They never refuse to work. They pull trees along and lift heavy, logs. No animal is stronger than an elephant.
    Elephants have very strong legs. Their legs are like trees. They usually walk slowly because they are so big, but they walk very quietly.
    Wild elephants living in the jungle usually stay together in big families. Usually one old elephant leads them. The others follow their leader. They usually move about at night, looking for food. In the hot daytime, they go to sleep in the cool shade of the trees.
    Elephants are kind animals. When one of them is hurt and cannot pull itself on to its feet, the other elephants lift it up and help it to walk.
    Some people say that elephants never forget. They remember people who are kind or cruel to them. There are many stories about this.