In the article, Carol Buckley at the Elephant Sanctuary, reported that when a resident elephant was introduced to a newcomer the two girls, Jenny and Shirley, could hardly contain their excitement at seeing each other. It turned out that the two had been in the same traveling circus 23 years earlier.
Researchers believe that their remarkable power of recall is how elephants survive. Matriarch elephants hold a store of social knowledge that their families rely on to survive.
Elephants have high intelligence, right up there with dolphins, apes and human beings. According to research these are the only mammals that can recognize their reflections in the mirror.