The dark fur is rare in Europe due to a reduced genetic diversity, but at least half of the wolf population has black fur in Yellowstone National Park in the United States. Because wolves travel ...

The video footage, released on SAVE Wildlife Conservation Fund Poland's Facebook page on February 4, compiles two clips from the wildlife camera. The first shows a black wolf slowly padding through the stream before jumping onto the bank, followed by a gray-colored wolf. The second clip shows two black wolves crossing the stream.