Not even park rangers are off limits for angry bull elk.

Wolves culled the elk. Fewer elk means more aspens can grow. More beavers are attracted to the trees. It's called a trophic ...

Thirty years after their reintroduction in Yellowstone, wolves have proven their ecological worth, at least in the context of ...

Millions of people visit Yellowstone National Park’s hot springs. There’s Grand Prismatic, the park’s largest and brightest spring known for its deep orange, yellow and turquoise colors; Mammoth Hot ...

Yellowstone National Park has recently seen the effects of wolves being brought back into its borders. The animals have slowly shaped the landscape around them, being the key to the entire ecosystem’s ...

Staff in Yellowstone National Park observed the first grizzly bear tracks of 2025 earlier this month — signaling the very ...

Notoriously elusive, cougars vary their range in response to their prey, mostly elk and deer. In winter they favor the shallow snow in the northern reaches of Yellowstone. This cougar was caught ...

Three decades after their reintroduction, Yellowstone’s wolves have transformed the park. What’s next for the ecosystem and ...

Mark Hebblewhite is a professor of ungulate habitat ecology at the University of Montana. He and the University’s W.A. Franke College of Forestry and Conservation have collaborated with the ...