Unlike chimpanzees, bonobos resolve conflicts with sex.4 The “all-sex, all-the-time” species, bonobos have sexual intercourse with one another as freely as we shake hands (except, like us, they avoid incest). They have heterosexual sex, homosexual sex, frontal sex, oral sex, and sex in exchange for an apple. And that’s before breakfast. Bonobos personify the “Make love, not war” motto, because they resolve social tension and conflicts with sex rather than threats and aggression.