A tourist guide at Yellowstone filmed a wolf chasing after an elk for about 3.5 to 4 miles.

It’s an animal-eat-animal world out there, especially in Yellowstone National Park. There are almost 70 different mammal species in Yellowstone, and most of those can be separated into two categories: ...

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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 ...

Wolf 8 was the smallest of all the male wolves released into Yellowstone and probably was the least likely to become a successful alpha male. When he was a yearling, equivalent to a teenager in human ...

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 ...