Some animals are champions of intelligence, too. Studies have shown that crows can solve puzzles as well as human five year olds. Dolphins have unique names for themselves, in the form of a whistle. Cockatoos can pick locks. And chimpanzees are surprisingly good at memory games.

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    Bats

    Bats

    Bats don’t slip from their sleeping roosts because they can lock their talons onto the branches where they sleep. The

    duck

    Ducks

    Unlike most ducks, wood ducks nest in tree cavities—for instance, you might find one in an old woodpecker hole! The

    panda carrying cub in her mouth

    Pandas

    A wild female panda may have five to eight offspring in her lifetime, but she will only give birth once every other year.