Ключевые слова: africa, african, amphibius, animal, animals, aquatic, background, big, common, danger, dangerous, fat, fauna, grass, head, herbivore, herbivorous, hippo, hippopotamidae, hippopotamus, huge, lake, large, mammal, massive, mouth, national, natural, nature, portrait, river, safari, south, tanzania, teeth, water, wet, white, wild, wilderness, wildlife, zambia,