Anne J. Manning in The Harvard Gazette:
The endangered bonobo, the great ape of the Central African rainforest, has a reputation for being a bit of a hippie. Known as more peaceful than their warring chimpanzee cousins, bonobos live in matriarchal societies, engage in recreational sex, and display signs of cooperation both inside and outside their immediate social groups.
But this relaxed reputation isn’t quite reality, according to a new Harvard study in Current Biology. Researchers observing bonobos and chimps in their natural environments over roughly three years found that actual rates of aggressive acts were notably higher among male bonobos than among male chimps.
More here.