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

When wolves were reintroduced to Yellowstone National Park in the United States after being absent nearly 70 years, the most remarkable "trophic cascade" occurred. What is a trophic cascade and how ...

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 ...

After nearly a century’s absence, gray wolves continue to recolonize California, bringing changes and challenges to the state and its inhabitants. Ongoing research and monitoring programs are helping ...

Gray Wolves typically hunt large mammals supplemented with rabbits and hares. Five Pacific salmon species migrate upstream in British Columbia’s rivers and streams. The annual migration of so many ...

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