a porcupine in fairbanks, alaska

aggressive alaska america animal bark brown burrow canada chordata clacking common coniferous covered den does dorsatum eat erethizon eyesight forest front fur good herbivore hibernate intelligent large learner mammal memory nature nocturnal nonaggressive north not outdoors pig poor porcupine quill quills rapid rodent rodentia solitary teeth thorn travel tundra underground vegetarian vocal wild wilderness wildlife