![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
![Mature male Bonobo or (formerly) Pygmy Chimpanzee (Pan Paniscus) in a natural setting, showing an erect penis while eating Stock Photo - Alamy Mature male Bonobo or (formerly) Pygmy Chimpanzee (Pan Paniscus) in a natural setting, showing an erect penis while eating Stock Photo - Alamy](https://c8.alamy.com/comp/E54XFM/mature-male-bonobo-or-formerly-pygmy-chimpanzee-pan-paniscus-in-a-E54XFM.jpg)
Mature male Bonobo or (formerly) Pygmy Chimpanzee (Pan Paniscus) in a natural setting, showing an erect penis while eating Stock Photo - Alamy
![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/EbsedZIXYAABxAn.jpg)
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- 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-QFxWAAIxGbr.jpg)
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-
![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)