North American Porcupine (Erethizon dorsatum)
From the U.S. Fish and Wildlife Service's online digital media library.
Check http://images.fws.gov/ for higher quality version.
Title: Porcupine in Tree
Alternative Title: (none)
Creator: U.S. Fish and Wildlife Service
Source: Innoko NWR-085
Publisher: U.S. Fish and Wildlife Service
Contributor: INNOKO NATIONAL WILDLIFE REFUGE
Language: EN - ENGLISH
Rights: (public domain)
Subject: Refiges, Innoko National Wildlife Refuge, Species, Animal
Date Issued: June 18 2002