![Proboscis Monkey (Nasalis larvatus) adult male, with erect penis, sitting on branch, Labuk Bay, Sabah, Borneo, Malaysia Stock Photo - Alamy Proboscis Monkey (Nasalis larvatus) adult male, with erect penis, sitting on branch, Labuk Bay, Sabah, Borneo, Malaysia Stock Photo - Alamy](https://c8.alamy.com/comp/CNMMKH/proboscis-monkey-nasalis-larvatus-adult-male-with-erect-penis-sitting-CNMMKH.jpg)
Proboscis Monkey (Nasalis larvatus) adult male, with erect penis, sitting on branch, Labuk Bay, Sabah, Borneo, Malaysia Stock Photo - Alamy
![Matt Jarvis a Twitteren: "From no penis yesterday, to definite penis today. Day 15 of #BeastOfTheDay is the proboscis #monkey (Nasalis larvatus), one of the strangest animals I've ever seen. Also known Matt Jarvis a Twitteren: "From no penis yesterday, to definite penis today. Day 15 of #BeastOfTheDay is the proboscis #monkey (Nasalis larvatus), one of the strangest animals I've ever seen. Also known](https://pbs.twimg.com/media/DTl-GlSW0AA9_D2.jpg)
Matt Jarvis a Twitteren: "From no penis yesterday, to definite penis today. Day 15 of #BeastOfTheDay is the proboscis #monkey (Nasalis larvatus), one of the strangest animals I've ever seen. Also known
![What The F*** Facts on Twitter: "Proboscis Monkeys have a permanent erect penis. http://t.co/sTMZ2lOPak" / Twitter What The F*** Facts on Twitter: "Proboscis Monkeys have a permanent erect penis. http://t.co/sTMZ2lOPak" / Twitter](https://pbs.twimg.com/media/Bmg-ShqIAAAWU6g.jpg)
What The F*** Facts on Twitter: "Proboscis Monkeys have a permanent erect penis. http://t.co/sTMZ2lOPak" / Twitter
![Nature Picture Library Proboscis Monkey (Nasalis larvatus) sub-mature male sitting in a tree. Bako National Park, Sarawak, Borneo, Malaysia, March. - Fiona Rogers Nature Picture Library Proboscis Monkey (Nasalis larvatus) sub-mature male sitting in a tree. Bako National Park, Sarawak, Borneo, Malaysia, March. - Fiona Rogers](https://www.naturepl.com/cache/pcache2/01351995.jpg)
Nature Picture Library Proboscis Monkey (Nasalis larvatus) sub-mature male sitting in a tree. Bako National Park, Sarawak, Borneo, Malaysia, March. - Fiona Rogers
IFLScience - Meet the proboscis monkey (Nasalis larvatus), a monkey only found in Borneo. The proboscis monkey is one of the largest monkeys native to Asia. It's very easily identified (for obvious
![Adult proboscis monkey, Nasalis larvatus, penis detail, Bako National Park, Sarawak, Borneo, Stock Photo, Picture And Rights Managed Image. Pic. X8B-2619861 | agefotostock Adult proboscis monkey, Nasalis larvatus, penis detail, Bako National Park, Sarawak, Borneo, Stock Photo, Picture And Rights Managed Image. Pic. X8B-2619861 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/15136fab7326382ecb2fca886eba8969/x8b-2619861.jpg)