Regents of the University of Michigan
Animal Diversity Web: Gray Fox
Comprehensive reference information about the gray fox. Includes taxonomic classification, specimens, and other details about this solitary omnivore's relationship with the environment.
Smithsonian Institution
National Museum of Natural History: American Mammals: Common Gray Fox
Gray foxes are adept at climbing trees. They are active at night and during twilight, sleeping during the day in dense vegetation or secluded rocky places. Learn more about the Urocyon cinereoargenteus, more commonly known as a Common...
Other
Arizona Sonora Desert Museum : Animal Fact Sheet: Gray Fox
This fact sheet on the gray fox provides details on physical characteristics, adaptations, range, habitat, conservation, diet, and other extra-fun facts.