Mackenzie Valley wolf articles | 台北市立動物園資訊網

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The northwestern wolf (Canis lupus occidentalis), also known as the Mackenzie Valley wolf,[5] Alaskan timber wolf,[6] or Canadian timber wolf,[7] is a subspecies of gray wolf in western North America. Arguably the largest grey wolf subspecies in the world, 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.[6][1][2][3][4][5][6]

This wolf is recognized as a subspecies of Canis lupus in the taxonomic authority Mammal Species of the World[7] (2005).[8] The subspecies was first written of by Scottish naturalist Sir John Richardson in 1829. He chose to give it the name occidentalis in reference to its geographic location rather than label it by its color, as it was too variable to warrant such.[2][8]