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: ...

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, ...

Allan Hathaway, a wildlife photographer, captured the video of the Wapiti wolf pack chasing after the lone bison in ...

It only makes sense that this incredible video below took place in Yellowstone National Park. There’s an estimated 5,400 bison that call the beautiful national park home, and around 120 wolves also ...

WARSAW, Poland (AP) — A pack of wolves in eastern Poland made a wrong choice of prey when it tried to attack a herd of bison, but was dismally chased away. An online camera installed by state forestry ...

Photographer Tom Murphy has documented the park's wildlife for decades. Now, one of his photos will be on a Forever Stamp.