Southern Rocky Mountain wolf

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Southern Rocky Mountains wolf
The Wolves of North America (1944) C. l. youngi ♂.jpg
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Canidae
Genus: Canis
Species: C. lupus
Subspecies: C. l. youngi
Trinomial name
Canis lupus youngi
Goldman, 1937[1]

The southern Rocky Mountain wolf (Canis lupus youngi) is a possibly extinct subspecies of gray wolf found over southeastern Idaho, southwestern Wyoming, northeastern Nevada, Utah, western and central Colorado, northwestern Arizona and northwestern New Mexico. It is a light-colored, medium-sized subspecies closely resembling C. l. nubilus, though larger, with more blackish-buff hairs on the back.[2]

As of 2005,[3] it is considered a valid subspecies by MSW3, though it is classed as a synonym of C. l. nubilus by the United States Fish and Wildlife Service.[4]

Wolves have reestablished in Idaho and Wyoming, however, Canis lupus youngi is probably extinct, as the wolves there, as of 2015, are of subspecies Canis lupus occidentalis.


  1. ^ "Canis lupus youngi Goldman, 1937". Integrated Taxonomic Information System. 
  2. ^ Glover, A. (1942), Extinct and vanishing mammals of the western hemisphere, with the marine species of all the oceans, American Committee for International Wild Life Protection, pp. 227-229.
  3. ^ Wozencraft, W.C. (2005). "Order Carnivora". In Wilson, D.E.; Reeder, D.M. Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. ISBN 978-0-8018-8221-0. OCLC 62265494. 
  4. ^ Chambers SM, Fain SR, Fazio B, Amaral M (2012). "An account of the taxonomy of North American wolves from morphological and genetic analyses". North American Fauna. 77: 1–67. doi:10.3996/nafa.77.0001. Retrieved 2013-07-02.