Ключевые слова: america, american, animal, animals, canada, canadian, canadian porcupine, close up, common porcupine, erethizon, erethizon dorsata, erethizon dorsatum, erethizon dorsatus, erethizontidae, erethizontinae, fauna, mammal, mammalia, mammals, mexican, mexico, natural, nature, north america, north american, north american porcupine, one, one animal, porcupine, porcupines, portrait, rodentia, sleep, sleeping, united states, us, usa, wild, wild animal, wild life, wildlife, zoo,