The commonly held claim that wolves reintroduced into Yellowstone National Park in the mid-1990s spearheaded a "trophic cascade" of ecological restoration, as some studies indicated, is unfounded, ...

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 ...

Ecosystems in the Northwest were heavily shaped by wolves before they were nearly wiped out of the region, a new study finds. By the 1930s, gray wolves were nearly gone in Oregon and the rest of the ...

A gray wolf at the Wildlife Science Center in Forest Lake, Minn. Colorado is going to be reintroducing gray wolves. (Dawn Villella/Associated Press) Ecosystems in the Northwest were heavily shaped by ...

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 ...

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

DENVER (KDVR) — Colorado State University researchers spent over 20 years observing food webs and ecosystems in Yellowstone and concluded removing apex predators damages the ecosystem in a lasting way ...

Researchers with Colorado State University spent two decades studying the ecosystems in Yellowstone National Park, with the goal of learning whether or not the reintroduction of wolves had any rapid ...

The world’s largest canine draws both reverence and ire. Here are some of the most common misunderstandings, according to scientists. A young male wolf nicknamed Gray Mane, walks ahead of its pack in ...

ESTES PARK, Colorado — Elk graze on neighborhood lawns, golf course greens and the grass around city hall in this gateway town to Rocky Mountain National Park. The burgeoning herd browsing through ...