See also
Find North American porcupine information at Animal Diversity Web
North American porcupine
Erethizon dorsatum
Permissions for Use
This resource may not be downloaded and used without permission of the copyright holder except for educational fair use.
Identifications
North American porcupine
Erethizon dorsatum
Caption
Head-on
Contributors
Mammal Division 
(copyright holder), Museum of Zoology, University of Michigan
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