Ключевые слова: america, american, american beaver, animal, animals, beaver, beavers, canada, canadian, canadian beaver, castor, castor canadensis, castor fiber, castor fiber canadensis, castoridae, close up, fauna, head, lake, mammal, mammalia, mammals, mountain beaver, natural, nature, north america, north american, north american beaver, one, one animal, pond, portrait, river, rodent, rodentia, rodents, swim, swimming, united states, us, usa, water, wild, wild animal, wild life, wildlife, zoo,