The second round of gray wolf reintroductions in Colorado this month reignited statewide debate about the animals, government ...

Once nearly wiped out, wolves are making a powerful comeback in the U.S. From protected parks to remote wilderness areas, these 10 locations are witnessing a resurgence of these apex predators.

Is the measure of an animal’s wildness equal to the distance it keeps from humans? The Ellesmere wolves are separated from their relatives living on much tamer landscapes to the south ...