![Why humans have larger penises and smaller testicles than other great apes - Genetic Literacy Project Why humans have larger penises and smaller testicles than other great apes - Genetic Literacy Project](https://geneticliteracyproject.org/wp-content/uploads/elementor/thumbs/Screen-Shot-2017-04-17-at-1.21.55-PM-pe527z18e7zoulbewnuidwvzlmxqwmey7gpjve01yc.png)
Why humans have larger penises and smaller testicles than other great apes - Genetic Literacy Project
![Chimps, bonobos, and the evidence that humans are naturally polygamous | by The Gift Of Fire | Medium Chimps, bonobos, and the evidence that humans are naturally polygamous | by The Gift Of Fire | Medium](https://miro.medium.com/v2/resize:fit:883/1*IrINGo5mPOJ3v584WsD8eQ.jpeg)
Chimps, bonobos, and the evidence that humans are naturally polygamous | by The Gift Of Fire | Medium
![Complex patterns of signalling to convey different social goals of sex in bonobos, Pan paniscus | Scientific Reports Complex patterns of signalling to convey different social goals of sex in bonobos, Pan paniscus | Scientific Reports](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fsrep16135/MediaObjects/41598_2015_Article_BFsrep16135_Fig1_HTML.jpg)
Complex patterns of signalling to convey different social goals of sex in bonobos, Pan paniscus | Scientific Reports
![Stock photo of Chimpanzee dominant male with erect penis, female watching Zambia {Pan.... Available for sale on www.naturepl.com Stock photo of Chimpanzee dominant male with erect penis, female watching Zambia {Pan.... Available for sale on www.naturepl.com](https://www.naturepl.com/cache/pcache2/01068929.jpg)
Stock photo of Chimpanzee dominant male with erect penis, female watching Zambia {Pan.... Available for sale on www.naturepl.com
![Zanna Clay on Twitter: "Overall, an impressive sculpture & piece of great ape art, but check out his teeeeny tiny penis! Bonobos actually have some of the longest penises of all primates- Zanna Clay on Twitter: "Overall, an impressive sculpture & piece of great ape art, but check out his teeeeny tiny penis! Bonobos actually have some of the longest penises of all primates-](https://pbs.twimg.com/media/Ebr-PQxXQAceDUn.jpg)