Ключевые слова: africa, african, amphibius, animal, aquatic, behavior, big, black, body, brown, color, danger, dangerous, environment, eye, fat, gray, grey, head, hippo, hippopotamus, isolated, large, mammal, mouth, natural, nature, nobody, one, open, outdoor, overweight, park, portrait, safari, small, south, species, standing, vertebrate, water, wet, wild, wilderness, wildlife,