The gray wolf, also known as the timber wolf or the ... although nearly pure white, red, or brown to black also occur.

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 ...

So is a raven-black wolf from the Elevation Mountain pack ... creating a perpetually unnatural situation for a park intended to preserve nature. With a near-unlimited meat supply, Yellowstone's ...

In the natural world, the absence of bright colours is anything but dull. Black or white, or combinations of both, adorn some of nature's most charismatic creatures. The giant panda, native to the ...