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, ...

After being hunted to extinction a century ago, gray wolves are continuing their remarkable comeback story in California, ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Lower Falls in Yellowstone. A new study conducted by researchers at Colorado State University has found that nearly 30 years after ...

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 ...

Wolves are apex predators that shape entire ecosystems through their presence alone, acting as ecosystem engineers that ...

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 ...

Wyoming wildlife managers plan to reduce how many wolves can be hunted by 50% following a canine distemper outbreak that has ...

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 ...

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 ...