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One of the biggest and rarest, living reptiles on earth, the black caiman.
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One determined rodent faces the challenges of predators and the elements.
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The life, combat and death of strange beasts that roamed the planet 100 million years ago provide insight on evolution and existence on Earth.
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A mother zebra and her son's treacherous migration through East Africa and across the Mara River.
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For some thrill-seekers the allure of the falls is overwhelming.