Elephants are known to be one of the most intelligent and complex creatures on the planet.  They live in tightly-knit family groups, form strong bonds between friends and relatives, and are one of the few creatures believed to conclusively show empathy.  Elephants have been observed comforting others in distress, running to the aid of those in trouble (even if that animal is unrelated, or even not of the same species!), and grieving for their dead.