A guide in Yellowstone National Park on Monday shared stunning footage showing a black wolf partially obscured by mist as other wolves remained mostly hidden in the background. “This was the ...

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.

At that locus, each wolf has two copies of a color gene ... “It’s the optimal mating strategy in the face of canine distemper,” Cubaynes says, as mating black with gray results in a combination of ...