Gray wolves and cougars are not only iconic to the Yellowstone National Park landscape, but they also play important roles in the overall health of the ecosystem. With both being apex predators, ...

Narrated by the British writer and environmental campaigner George Monbiot, and largely drawn from his book Feral, it ...

Wolves in Yellowstone National Park have experienced a 27% decline in population in 2025.

In Yellowstone National Park — where gray wolves were reintroduced starting in 1995 — researchers have gone back and forth on whether the restoration of wolves has impacted the ecosystem. The idea is ...

When wolves are on the hunt, a kill rarely goes unnoticed for long. In the elk- and deer-rich areas of northern Yellowstone National Park, ravens are often among the first scavengers to arrive on the ...

Over the last three decades, Yellowstone National Park has undergone an ecological cascade. As elk numbers fell, aspen and willow trees thrived. This, in turn, allowed beaver numbers to increase, ...

Learn more about why the story of how wolves saved Yellowstone National Park’s aspens is more complicated — and more instructional — than it appears.

In April of 2025, headlines across the world announced that the dire wolf had been brought back from extinction. This 130-150 lbs wolf species, about 25% heavier than modern-day gray wolves, had not ...