Scientists once recognized 24 subspecies of wolves (Canis lupus) in North America. Some of them are now extinct, some of them are no longer recognized as distinct subspecies, and some might be ...

Pleasant Island in Alaska is not exactly befitting of its name. The frigid, 20-square-mile island is uninhabited by humans, ...

Epicyon haydeni was the largest of all the Epicyon species. Like other meat-eating animals, these colossal wolves had special “carnassial” teeth for slicing meat.