A second clip, taken last fall, records two black wolves and a gray wolf fording the same stream. Most of the 2,500 to 3,000 wolves in Poland are gray with red or black accents.

The black fur allele has fitness costs but also confers higher immunity ... But in North America, especially in Yellowstone National Park where a large amount of wolf research is conducted, black ...

Camera traps in a forest have caught video of two all-black wolves. Now scientists are investigating where they might have ...

Two rare black wolves, likely siblings, were spotted on camera crossing a stream in a Polish forest, a conservation ...