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- Gibbons, Whitt. "Porcupines Have a Point to Make." University of Georgia Savannah River Ecology Laboratory. Aug. 5, 2003. (Oct. 1, 2008)http://www.uga.edu/srel/ecoviews/ecoview030805.htm
- "Prehensile-tailed Porcupine." Smithsonian National Zoological Park. (Oct. 1, 2008)http://nationalzoo.si.edu/Animals/SmallMammals/fact-porcupine.cfm
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