Ключевые слова: animal, big, body, choeropsis liberiensis, close, double, environment, eye, falls, fat, fauna, feeding, good, gray, grey, happy, head, hippo, hippopotamidae, hippopotamus, huge, large, male, mammal, mother, mouth, national, natural, nature, one, open, outdoors, park, pink, portrait, relax, sleep, son, twin, zoo,