Few animals symbolize wild interconnectedness quite like wolves, whose return helped reveal just how tightly ecosystems are woven together.

A grey wolf prowls through Yellowstone National Park near Mammoth Hot Springs in Montana. A group of 66 wolves was reintroduced to Idaho and Yellowstone in the late 1990s. They now total 2,800 ...

Detailed weight data on wolves near Yellowstone reveals that Wyoming's wolves seem to weigh much more than gray wolves in other parts of the Lower 48. Here's why ...

Thirty years ago, park rangers reintroduced grey wolves into Yellowstone National Park. They wanted to restore the ecosystem and get the elk population, which had decimated the plant community, in ...

Wyoming wolves are stout compared to some other Lower 48 subpopulations, and the reason why they tend to run hefty is ...

Wolves returned to Yellowstone and transformed the landscape. Their presence changed elk behavior, allowing forests to regrow ...

This valley in northeastern Yellowstone is home to a number of notable wolf packs. Embark on a tour or head out on your own ...

Embark upon a thrilling wintertime expedition to witness packs of wolves in their pristine natural habitat. Venture into the heart of Yellowstone National Park to scout for wildlife aboard ...

Across North America, mountain lions, bears and gray wolves have made a remarkable comeback over the last 50 years. Once nearly exterminated, these animals have been recovering their populations and ...