Elephants call by name.

Although it sounds very strange,yet present day researchers have found an unobserved fact. According to their research they have found that elephants call each other by names. However impossible it might sound yet they have put up an example to prove their point. 

They have used a machine learning model to find out.

They say that when a single elephant makes a call towards a group of elephants ,the entire group answers. They further noticed the reverse too. When an elephant call out in a different note, only a single came forward.

This is just an example and more research works are being done.