A family of wolves will patrol its territory, a pack's "home turf" on which they hunt, raise pups, and exist as a family. Territory size is highly variable and depends on a number of factors such as prey density, terrain, climate and competition with other predators. Territory size in the western Great Lakes states, including Minnesota where the below video was filmed, range 25 -100 square miles. Jim Brandenburg, National Geographic photographer, filmmaker and environmentalist, releases daily videos on his Nature 365 site throughout the calendar year. Enjoy!