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Deemed the happiest animal on Earth for its adorable grin, this marsupial hails from Western Australia.

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The Happiest Animal on Earth Is the Quokka — Plus More About Animals
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    The Happiest Animal on Earth Is the Quokka

    The Happiest Animal on Earth Is the Quokka

    It's small. It's cute. It's the happiest animal on Earth. The quokka earned the title of world's happiest animal because of its "smile." Learn more …

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