Ключевые слова: africa, aggression, aggressive, amphibious, animals, beast, body, closeup, conservation, danger, displaying, endangered, enormous, fat, gray, hippopotamus, horizontal, jaw, large, male, mammal, massive, meal, mouth, open, park, river, roar, safari, south, strong, threat, travel, tusk, wet, wide, wild, wildlife, yawning, zoo,