The young female fought her own mother and 4 top-ranking males to seize control of her troop. In southern Japan, a young female macaque has upended societal norms by seizing control of her 677-member troop through a violent primate coup. Now, her hard-won empire could come crumbling down around her due to one unstoppable force: mating season. Meet Yakei, a 9-year-old female living in a Japanese macaque reserve called the Takasakiyama Natural Zoological Garden, where she has spent the last year reigning as the first female troop leader in the park's 70-year history. A New York Times article published Jan....