Ключевые слова: africa, african, amphibius, animal, aquatic, background, big, black, body, brown, cute, danger, dangerous, environment, eye, fat, fauna, herbivore, hippo, hippopotamus, hippos, huge, isolated, lake, large, mammal, mouth, national, natural, nature, one, open, outdoor, overweight, park, pond, river, safari, skin, swimming, travel, underwater, view, water, wet, white, wild, wilderness, wildlife, zoo,