- Smoke from a fierce green fire: History of timber wolves in Wisconsin by Inga Brynildson,  1981
 - The Wolf: The Ecology and Behavior of an Endangered Species by L. David Mech,  1981-04
 - Wolves (Animals, Animals) by Daniel A. Greenberg,  2002-12
 - The African Wild Dog (The Library of Wolves and Wild Dogs) by J. D. Murdoch, M. S. Becker,  2002-08
 - Wolves (Wildlife at Risk) by Gillian Standring,  1992-04
 - The Red Wolf: Help Save This Endangered Species! (Saving Endangered Species) by Alison Imbriaco,  2007-03
 - Shadow Mountain: A Memoir of Wolves, a Woman, and the Wild by Renee Askins,  2002-07-09
 - Endangered Wildlife and Plants of the World:Vol. 12 Umb-Zor 
 - Endangered Animals - Over 100 Questions and Answers to Thngs You Want to Know by Lucinda Hawksley,  2000
 - Gray Wolf: An entry from Gale's <i>Beacham's Guide to Endangered Species: North America</i> 
 - The Wolf in the Southwest: The Making of an Endangered Species 
 - Mexican Gray Wolf: An entry from Gale's <i>Beacham's Guide to Endangered Species: North America</i> 
 - Wolf Mountains: A History of Wolves Along the Great Divide by Karen R. Jones,  2002-12
 - Dogs, wolves, coyotes, jackals, and foxes: An entry from Thomson Gale's <i>Grzimek's Animal Life Encyclopedia</i> by James, PhD Malcolm,  2004
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