Ключевые слова: africa, aggressive, aggressor, animal, animals, aquatic, barrel, body, brown, brute, canine, columnar, cool, freshwater, grass, habitat, hairless, herbivore, herbivorous, hide, highly, hippo, hippopotamus, ivory, lakes, large, legs, loss, mammal, mangrove, massive, mouth, mud, open, opening, rivers, shape, short, skin, species, swamps, territorial, torso, tough, tusks, ugly, unpredictable, waddle, water, wide,