not that guy but there's nigger  tribes who, when they kill a monkey for food, they look after the babies alongside their human babies and consider monkeys something almost human, closer to human than to other animals. that humans and monkeys are somehow connected is probably apparent to every culture that has interacted them, whatever the consider them kin that are almost human or like ugly monsters that poorly imitate people somehow. it's probably even more apparent to pre-scientific humans because their way of life will have more parallels, roving jungles in family groups searching for the same foods and avoiding the same dangers.