Group size and mating preferences may have caused male primates, including humans, to evolve deeper voices than females. The findings can help to shed light on social behavior in humans and their ...

Monkeys shy away from bystanders during copulation, irrespective of the bystanders' gender or rank. The new study, by Anne Overduin-de Vries and her team from the Biomedical Primate Research Centre in ...

Primates display some of the most intricate social systems among mammals, shaped by ecological constraints, cognitive capacities and evolutionary history. Group structures range from egalitarian ...