The footage was posted to Instagram by a wildlife photographer, showing the trio moving through the park in close formation.

By Lyle Lewis Yellowstone National Park is often told as a story of recovery. Wolves returned and then elk changed their ...

Thirty years ago, park rangers reintroduced grey wolves into Yellowstone National Park. They wanted to restore the ecosystem and get the elk... How the wolf changed Yellowstone 30 years after ...

Biology teachers around the world commonly introduce their students to the concept of 'trophic cascades' with an example from Yellowstone National Park in the United States.

In 1995, Yellowstone National Park became the centre of a conservation experiment that would later be celebrated across the ...