Black fur in wolves is caused by a genetic mutation known ... Some researchers also point to wolf-dog hybridization, as certain domestic dog breeds carry the gene for melanism, which could have ...

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 ...

DESCRIPTION: The Alexander Archipelago wolf is notably smaller and darker than the typical gray wolf, with a denser coat. On average, individuals weigh between 30 to 50 pounds, are 3.5 feet long, and ...

Siblings, they would have inherited genes for their black pelage from a common parent. Wolves and domestic dogs can mate — they belong to the same species and their unions would be blessed with ...

WARSAW, Poland (AP) — Two rare black wolves, likely siblings, were spotted on camera crossing a stream in a Polish forest, a conservation organization said Sunday. The unusual sighting ...