Isabel Benguet is an applied evolutionary ethologist who studies animal social behavior to better understand human challenges with each other and the planet. She discusses working with Melissa and Ann Marie and the intense joint sessions they had in early 2015.
Bonobo chimpanzees playfully interact with each other by using vulnerable parts of their anatomy, such as the genitals, which can also have negative impacts on neighboring males; this highlights the line of trust and vulnerability that comes with play.