Bonobos and chimpanzees use sex to ease social tensions
Sex isn’t just about reproduction - at least not for our closest relatives. A new study, co-authored by Utrecht University behavioural biologist Edwin van Leeuwen and the late Frans de Waal, reveals that bonobos and chimpanzees use sex to reduce tension and strengthen social bonds. These findings suggest that the last common ancestor of humans, bonobos, and chimpanzees - over six million years ago - may have already been using sex for social purposes.
Read more about this research here.