timber wolf
grey wolf
gray wolf
Canis lupus

One would have to go north a thousand miles to find a gray wolf.

It was a gray wolf that sometimes flashed white in the clear night.

The wolves, long and gray, a different kind of wolf, came with them.

One gray wolf with little form and no head ran before the pack.

In a moment it became clear what had startled the gray wolf.

It was far larger than the common gray wolves of the forest.

At issue is the best way to get gray wolves back into Yellowstone.

Perhaps ten feet away stood a huge, dark gray wolf.

Another great gray wolf, but not so large as himself.

Three giant gray wolves they were, coming on in a line.