Add Yahoo as a preferred source to see more of our stories on Google. A pack of four wolves (Canis lupus) in the leaves© Tomas Hejlek/Shutterstock.com The post How Wolves Hold Entire Ecosystems ...

Add Yahoo as a preferred source to see more of our stories on Google. The commonly held claim that wolves reintroduced into Yellowstone National Park in the mid-1990s spearheaded a "trophic cascade" ...

The video traces how wolves declined across much of their former range and later returned in the lower 48 states, including ...

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 ...

On Prince of Wales Island, Alaska, gray wolves are doing something unexpected: hunting sea otters. This surprising dietary shift appears to have notable implications for both ecosystems and wolf ...

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 ...

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 ...

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 ...

While I was growing up in New Jersey, I had the true privilege of visiting the Lakota Wolf Preserve. The nonprofit preserve is home to captive-born wolves, lynx, bobcats, and foxes that were rescued ...

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 ...