page_title: Northwestern wolf
section_title: Reintroduction
hierarchical_section_title: Northwestern wolf / Reintroduction
caption_attribution_description: English: Wolves hunting bison in Yellowstone National Park
context_page_description: The northwestern wolf, also known as the Mackenzie Valley wolf, Rocky Mountain wolf, Alaskan timber wolf, or Canadian timber wolf, is a subspecies of gray wolf in western North America. It ranges from Alaska, the upper Mackenzie River Valley; southward throughout the western Canadian provinces, aside from prairie landscapes in its southern portions, as well as the Northwestern United States.
context_section_description: In Yellowstone National Park, artificially relocated northwestern wolves have been well-documented feeding on elk. They usually stampede the herd using pack teamwork to separate the younger elk from the adults. They also will charge young calves separated from their parents. Winter-weakened or sick elk also play an important part of Yellowstone wolf diets and it is estimated that over 50 percent of winter-weakened or sick elk in Yellowstone are killed by wolves. Of these, about 12 percent of carcasses were scavenged by other predators, including ravens, bald eagles, black bears, grizzly bears, and coyotes. In the same national park, wolves also prey on bison, though such attacks usually involve sick animals or calves, as bison can easily kill wolves with their hooves.
  They are present in Canadian or British safari parks including Longleat, Woburn,  and Parc Omega.
caption: Wolves hunting bison in Yellowstone
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