North American porcupine (Erethizon dorsatum) perched in an eastern hemlock. If you zoom in you can see its incisors, orange and hardened from iron oxide. Pic taken during last week's cold snap but these pincushions just don't care. Per one article they are still active at -38 °F. Lake Mohonk, NY. #porcupine #mammal #rodent #hemlock #Tsuga