Elephants are amongst the world's most intelligent species. With a mass just over 5 kg (11 lbs.), elephant brains are larger than those of any other land animal, and although the largest whales have body masses twentyfold those of a typical elephant, whale brains are barely twice the mass of an elephant's brain. A wide variety of behaviors, including those associated with grief, learning, allomothering, mimicry, art, play, a sense of humor, altruism, use of tools, compassion, self-awareness, memory and possibly language[1] all point to a highly intelligent species that are thought to be equal with cetaceans[2][3] and primates.

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