4 Death
Normally an elephant can live to 80 years. One of the most incredible facts about elephants is that elephants are the only creatures known to have death rituals. If an elephant is sick, the members of its herd will bring him food. If it dies, elephants will try and revive it with food, but once it is clear that the elephant is dead, the herd will quiet down.
It has been reported that they often dig up a small grave and cover the deceased with mud and branches, and then stay near the grave for several days. If a herd accidentally stumbles upon a lone dead elephant, they do the same for him. The elephants are reported to have shown signs of depression even. There have been reports of elephants burying dead humans.