When she noticed she was recording wolves instead, she kept the camera there and collected the black wolf footage a few weeks ago. In one clip, a black wolf and a gray wolf slowly crossed a stream ...

black, and white. The gray wolf population in Yellowstone mainly originates from Mackenzie Valley wolves, which were reintroduced from Canada in the 1990s. These wolves are large and well-suited to ...

For most animal biologists, seeing an all-black variant of their studied species would be a once-in-a-lifetime experience. But in North America, especially in Yellowstone National Park where a large ...