Regents of the University of Michigan
Animal Diversity Web: North American Porcupine
Comprehensive reference information about the North American porcupine, including taxonomic classification, habitat, physical description, specimens, and other details.
PBS
Nh Pbs: Nature Works: North American Porcupine
Check out this educational resource to find out about the North American Porcupine. This site features information ranging from characteristics, life cycle, behavior, range, habitat, and diet.
Smithsonian Institution
National Museum of Natural History: American Mammals: North American Porcupine
North American Porcupines are large, slow-moving, tree-climbing rodents, protected from predators by their formidable quills. In winter, they eat the bark, phloem, and cambium of trees, particularly conifers. Learn more about the...