How do elephants treat their dead?

There have been many stories about how elephants react to members of their species who have died. For the first time researchers Shifra Goldenberg, Ph.D., from the San Diego Zoo Institute for Conservation Research and the Smithsonian Conservation Biology Institute, and George Wittemyer, Ph.D., from Save the Elephants and the Department of Fish, Wildlife and Conservation Biology at Colorado State University have studied these phenomena.  

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Elephants clearly show feelings for deceased members of their species even if the dead elephant was not a member of their group. They approached the dead animal, investigated the carcass, and appeared to mourn when it was a relative. Some even visit the carcass repeatedly. Elephants have been observed vocalizing and attempting to lift a fallen elephant that had just died. This study indicates intelligence as well as deep emotions that we need more research to understand.