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    The end-Quaternary (late Pleistocene and Holocene) die-offs comprised a significant global mass extinction event, which led to the elimination of half of all mammal species heavier than 44 kilograms (100 pounds) and other large-bodied fauna across most continents (Australia, Eurasia, North and South America) and large islands (West Indies, Madagascar, and New Zealand), between 50,000 and 600
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    Two decades ago, Colorado Parks and Wildlife started a lynx reintroduction program; today a self-sustaining population of 150-250 lynx now roam Colorado’s backcountry New England cottontail populations have dwindled for decades due to habitat loss; the species was once a candidate for listing under the Endangered Species Act





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