The apex predators, restored to the park in 1995, appear to be keeping the local population of plant-eating elk in check, ...

The reintroduction of large carnivores has initiated a recovery process that had been shut down for decades,” says Painter in a statement.

Gray wolf pups are born helpless—blind, deaf, and without the strong sense of smell that helps adult wolves survive. Normally, these pups stay safe inside their den for at least the first three weeks ...

The restoration of gray wolves in Yellowstone National Park has helped revive an aspen tree population unique to the region, ...

For the first time since the 1940s, new aspens have joined the forest canopy in Yellowstone National Park. Researchers say ...

In a new study, a UC Berkeley-led team of biologists observed gray wolves near Yellowstone National Park traveling 20 ...

Yellowstone experts debunk viral claims of animals fleeing park due to a volcanic threat. The USGS and park rangers warn ...

YELLOWSTONE NATIONAL PARK, WYO. – Sitting in an old-growth spruce fir forest, Doug Smith says he can see first-hand the impact of reintroducing wolves on the larger ecosystem of Yellowstone ...

Long before Yellowstone became the world’s first national park in 1872, wolves thrived in the U.S. Rocky Mountains. But early Yellowstone rangers killed off the last of the park’s wolves by 1926.