Males, for example, will enjoy each other’s company by ‘penis-fencing’, which sees them rubbing their ‘swords’ together whilst dangling from a branch (nice work if you can do it). For females, the most frequent and preferred sexual activity is G-G, which they will choose over sex with a male if both present themselves at the same time. ‘There’s no bonobo that’s exclusively heterosexual or homosexual. They’re all bisexual,’ Parish told me. Like humans, bonobos have a partial separation between sex and reproduction, with females frequently initiating and engaging in sex outside of their fertile
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