3. Scientists and people who work with elephants have observed various kinds of behavior that show how intelligent these animals are. One mark of intelligence is the ability to use tools. Elephants sometimes use sticks to scratch themselves in places they cannot reach with their trunks. Another mark of intelligence is the ability to plan ahead. Indian farmers who keep elephants as work animals have observed this ability. There is no fence that will keep their elephants out of an area where they want to go, such as banana plantation. The only way the famers can save their bananas is to tie bells around the neck of the elephants. Then the famers will hear the elephants if they try to eat the banana. However, some elephants have figured out a way to silence the bells. They roll in mud until the bells are filled with mud and no longer make any sound.
Topic : The intelligence of elephants