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 ...

A Yellowstone National Park bison herd worked together to discourage two wolves from bison-hunting pack.

This bison herd said better luck next time to a pair of hungry wolves in Yellowstone National Park. It only makes sense that this incredible video below took place in Yellowstone. There’s an estimated ...

Infrared cameras in the Altay forests of northwest China's Xinjiang Uygur Autonomous Region have documented a pack of nearly 20 wild wolves, marking the largest group recorded in the area since ...

Canis lupus body size is dynamic and complex, and biologists aren’t in total agreement about why wolves are much larger in ...

"Due to the instability within the pack, we were unable to safely intervene or provide the level of veterinary treatment needed," officials said Charlotte Phillipp is a Writer-Reporter at PEOPLE. She ...