Elephants are the only animals that have ritual burials
As we know, only elephants, humans and Neanderthals have a ritual burial. Usually lifespan of an elephant is 60-80 years. If the elephant is sick, the members of the herd bring him food and support him when he stands. If the elephant died, they will try to revive it with food and water for some time.
When it becomes clear that the dead elephant, the herd pauses. They often dig a shallow grave and cover the deceased elephant with dirt and branches, and then will remain near the grave for several days. If the elephant had a very close relationship with the deceased, he may be depressed.
The herd stumbled on the stranger, the lonely, the dead elephant, will manifest such an attitude. In addition, there were cases when elephants buried the dead people in the same way, which they found.