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A century ago wolves were, not charismatic attractions for visitors to the park. They were a threat to the park "attractions, s. "Gray wolves are increasing and have become a decided menace to the herds of elk deer mountain sheep,,,,, warns and antelope." The 1915 superintendent "s annual report. "Several were killed in the park last winter and an, effort will be made the coming. Winter to capture or kill them. "The efforts were wildly successful. An October 1926 photo shows two pups sitting atop a bison carcass ears flat, against. Their heads as trappers, close in. They would be the last known lupine residents of the park until 1995.The eradication was disastrous. Combined with habitat loss for other top predators and increased grazing lands the removal,, Of wolves caused the elk population in the area to skyrocket. More elk roaming meant more, elk eating which hurt tree health. Throughout the park. Willows were hit especially hard and their, disappearance meant few building materials for the park s. " Beavers. The near disappearance of beavers along with, the soil erosion caused by fewer adult trees significantly hurt,, Streams rivers and floodplains,,,
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