India’s sacred monkey, the Hanuman langur, was generally considered to be a relaxed and non-aggressive species — that is until research from Harvard showed that the langur society isn’t averse to kidnapping, constant sexual harassment, group battles, abandonment of the young by their mothers, and the regular practice of infanticide. Such wickedness! As the strongest males compete for control of each troop, the winner tries to bite to death the young offspring of his predecessor. The mommy monkeys allow the infanticide, then present themselves to the new ruler for mating. Sounds rather Roman.