They are rare, they are elusive and they are so well camouflaged, they are difficult to see, even when they are right there.

In the depths of the Hoyo Negro pit 180 feet below sea level, a diving team has successfully recovered the skulls, jaw bones, ...

But Paunovich soon realized it was Canis lupus: the gray wolf. The last wolves seen in Yellowstone — two pups — were killed ...

Here is what we know after Colorado wildlife officials released 15 wolves caught in Canada as well as members of the Copper ...