Ключевые слова: africa, african, animal, animals, baby, bioko island, cameroon, cercopithecidae, cross river, drill, drill monkey, drills, endangered, equatorial guinea, fauna, forest, jungle, little, mainland drill, mammal, mammalia, mammals, mandrillus, mandrillus leucophaeus, monkey, monkeys, mother, natural, nature, nigeria, old world monkey, primate, primates, rainforest, sanaga river, tropic, tropical, two, two animals, wild, wild animal, wild life, wildlife, young, zoo,