Wolves preying on beavers in Minnesota reshape wetlands
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1 / 5Tom Gable
In this November 2019 photo provided by the Voyageurs Wolf Project, the Shoepack Lake Pack of wolves stops in front of a remote camera set on a trail in Voyageurs National Park, Minn. Scientists studying gray wolves in the park have traced how wolves preying on beavers affect the ecosystem by impeding the ability of beavers to build and maintain new dams that create wetlands. (Tom Gable/Voyageurs Wolf Project via AP)