Ключевые слова: africa, african, aggressive, animal, aquatic, big, black, body, bull, conservation, curious, danger, dangerous, eye, face, fat, gray, grey, habitat, happy, head, herbivore, hippo, hippopotamus, huge, jaw, lake, large, male, mammal, massive, mouth, natural, nature, outdoor, park, pool, portrait, reserve, river, south, teeth, tusk, water, wild, wildlife,