Yellowstone National Park, three years it took, and finally the best luck in the world. Male black wolf from Wapiti Pack, North Yellowstone, near Phantom lake. The black wolf is a gray wolf by species. The black coloration is a melanistic color variant. A gene mutation know as K locus is responsible for the dark variant found in both dogs and wolves.
Tags: Yellowstone Wolf canis Montana National Park wildlife nature Wapiti lupus Wyoming melanistic K-locus