Scientists debunk decades-long study claiming wolves' reintroduction triggered a dramatic transformation in Yellowstone.

Update at 1:30 p.m. Wednesday, July 31: Colorado Parks and Wildlife confirmed that eight sheep in Grand County were killed by wolves. The agency updated its Gray Wolf Depredation Report webpage on ...

The U.S. Department of Agriculture's Wildlife Services killed a male gray wolf in Wyoming on Sunday. The wolf had killed five sheep. The wolf had been translocated to Colorado from British Columbia as ...

WYOMING, USA — A wolf relocated to Colorado from British Columbia was killed last week by federal wildlife officials after a "wolf predation" involving five sheep was reported on private property in ...

A male gray wolf, part of a reintroduction program, was found dead in Wyoming after being released in Colorado. This is the first confirmed death of a wolf released in Colorado during the second round ...

A gray wolf that crossed from Colorado into Wyoming has been killed by a federal agency for killing several sheep, officials said. Male gray wolf 2505-BC was killed in north-central Wyoming by the U.S ...