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

In Yellowstone National Park ... but what was the biggest wolf that ever lived? The dire wolf (Canis dirus) was said to be around the size of the largest gray wolves, with a shoulder height ...

In the last five years, approximately 500 miles south of Yellowstone, Colorado has gone through a similar wolf reintroduction ...

Wildlife recently passed a major milestone as it's been 30 years since wolves were reintroduced in Yellowstone National Park.