MAMMOTH HOT SPRINGS (AP) Yellowstone National Park wolves have begun preying upon bison more, according to biologists. Elk meat has made up about 90 percent of the wolves diet since wolf ...

Yellowstone, established as a national park in 1872, provides scientists with a rare opportunity to study how large ...

See bison, moose, elk, pronghorn, bears, birds, wolves, and countless other animals in this wildlife-rich valley in ...

"When you disturb ecosystems by changing the makeup of a food web, it can lead to lasting changes that are not quickly fixed.

A guide in Yellowstone National Park has captured extraordinary footage showing a grizzly bear and her cubs chasing a wolf from they bison carcass they had claimed. But Billy Fabian’s footage also ...

These effects may be hard to replicate outside Yellowstone, however. Bison can only benefit ecosystems in this way when they ...

Welcome, Romulus, Remus and Khaleesi! These are the newly announced “Dire Wolves” produced through gene editing by Colossal ...

Mature elk can run 40 mph when they become so inspired, and recent footage from Yellowstone National Park shows that young elk are likewise fleet of foot when their lives are at stake. The ...

Bill Hamilton’s chest freezer probably looks a lot different than yours. While most of us pack ours with groceries, Hamilton stores pounds upon pounds of bison dung in his. Hamilton, a professor of ...