They have four toes with claws in an oval shape. They run on their toes, not their pads. Wolves mate for life. A litter of wolves is usually 4 to 6 pups. Pups are born deaf and blind with bright blue eyes. A pack of wolves can range from 2 to over 30 wolves. On average they run in packs between 5 and 8 wolves. Wolves can run at 36 to 38 MPH. Wolves were killed off in Montana in the late 1930's, but were reintroduced in Yellowstone National Park the 1995 and 1996 and their numbers are currently increasing. In 2013, there were at least 625 wolves in western Montana. The Montana Fish, Wildlife, and Parks allows up to 100 wolves to be hunted per year. Gray wolves can range in color from gray, black, tan, or white. Wolves prey on elk, deer, moose, and other animals.`