Today, the winter elk population in Yellowstone is fewer than 4,000—a number the park can sustain. But what what economic value do wolves provide to the park and the surrounding communities?

Unsurprisingly, wolf-watching in Yellowstone National Park is a popular activity among visitors. One of the world’s most ...

By the 1920s, gray wolves (Canis lupus) were no longer present in Yellowstone National Park and cougar (Puma concolor) ...

Dave Hallac stood in his office at the Yellowstone ... now supports robust populations of the three greatest living North American carnivores—the grizzly, the wolf, the mountain lion—as ...

Snow crunched underfoot as Mark Hebblewhite scanned the ridgelines of Canada’s Banff National Park. It was 1995, and the young biologist, fresh out of undergrad, was trailing one of the park’s most ...