Wolves will claim a territory by marking it with their scent. The leader will urinate on rocks, trees, and other borders of the area. After that is accomplished the other wolves then know where their territory is located. A pack does not allow other wolves or wolf packs to hunt on their territory. If wolves from another pack attempt it they will most likely be attacked.
Wolves can live in many different habitats, ranging from arctic tundra to forest and prairie.
At one time the wolf lived throughout most of the Northern hemisphere north of 20 degrees north latitude. Currently the government wants to reintroduce the wolves into the park and their native habitat, but are being opposed by ranchers and hunters, who fear the wolves' killing of livestock and game. Breeding of wolves occurs in late winter, usually in February or March of each year. Pups are born in a den after a gestation period of 63 days. They are born deaf and blind, weighing approximately one pound.