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Natural World 2017-2018, Nature's Wildest Weapons: Horns, Tusks and Antlers Nature's Wildest Weapons: Horns, Tusks and Antlers
From elephants to beetles, are animal weapons more than just instruments of blunt force?
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Natural World—2017-2018, Nature's Wildest Weapons: Horns, Tusks and Antlers
Professor Doug Emlen discovers the secrets of nature's arms races.
成人快手 Two