Elephants are the largest animals on land. They have a huge body with wide legs that look like pillars. Their tusks appear when they are around two years old. The tusks keep growing throughout their lives. They have thick skin that helps them maintain water in the body. The long trunk of elephants helps them in many ways. They can suck in water with their trunks and use it to grab food. Elephants also use their trunk as a snorkel while swimming and can also lift heavy weights with their trunk. Elephants are very intelligent and shy, but they turn dangerous when they feel threatened.