Gray wolves and cougars are not only iconic to the Yellowstone National Park landscape, but they also play important roles in the overall health of the ecosystem. With both being apex predators, ...

Narrated by the British writer and environmental campaigner George Monbiot, and largely drawn from his book Feral, it describes how the reintroduction of wolves to Yellowstone National Park in the US ...

Thirty years ago, park rangers reintroduced grey wolves into Yellowstone National Park. They wanted to restore the ecosystem and get the elk population, which had decimated the plant community, in ...

Learn more about why the story of how wolves saved Yellowstone National Park’s aspens is more complicated — and more instructional — than it appears.

Wolves in Yellowstone National Park have experienced a 27% decline in population in 2025.

Three decades after wolves were reintroduced in Yellowstone National Park, aspen stands are recovering, a new analysis suggests. Published in Forest Ecology and Management, the study looks at what ...

In Yellowstone’s wild chess match between wolves and cougars, it turns out the real power play is theft. After tracking nearly a decade of GPS data and thousands of kill sites, researchers found that ...

Add Yahoo as a preferred source to see more of our stories on Google. A wolf carries a very young pup by its hindquarters in this image caught by a game camera. A new study shows that contrary to long ...

A new study has found that cougars are making slight changes to their diets in order to avoid encounters with wolves. In Yellowstone National Park, cougar and wolf habitats are overlapping more than ...

This winter saw the most wolves from Yellowstone National Park killed in about a century. That's because states neighboring the park changed hunting rules in an effort to reduce the animals' numbers.

Ecosystems change when keystone species restore balance. Philanthropy can learn from nature by funding the actors, infrastructure and relationships that allow complex systems to regenerate.