Regents of the University of Michigan
Animal Diversity Web: Gray Wolf
Comprehensive reference information about the gray wolf. Includes taxonomic classification, specimens, pictures, and other details about this predator's role in the ecosystem.
PBS
Pbs Nature: Gray Wolf
Gray wolves were a frequent sight on the American plains, however, they are now an endangered species despite attempts to reintroduce them to their former habitats in the continental United States. Learn about their natural history in...