As Northern California wolf populations grow, more ranchers are hoping livestock guardian dogs will protect their animals.

A dog was seen jumping out of a car window and chasing a wolf in Yellowstone Friday. A tour guide captured photographs of the chase.

A team of archaeologists, natural scientists, evolutionary specialists and paleontologists affiliated with a number of ...

A group of tourists witnessed an extraordinary scene in Yellowstone National Park on Friday as a German Shepherd leaped from ...