Hedgehog Central 2004 [Online] http://hedgehogcentral.com/
People's Trust Fact Sheet: "Jerboas" 2004 [Online] http://www.yptenc.org.uk/docs/factsheets/animal_facts/jerboas.html
Perservation Station: "Fenec Fox" 2004 [Online] http://www.fortheanimals.com/menu2/canine/ed_fennec.htm
"Warthogs" 2004 [Online] http://www.bio.davidson.edu/people/vecase/Behavior/Spring2004/byington/byington.html