Fun fact: A tapir has the largest penis-to-body ratio of any animal. - Post by UserOne on Boldomatic
![Dr Russell Arnott on Twitter: "As well as having the largest penis-to-body length ratio on Earth, DYK the barnacle also has testicles on its head? 🏔️🍆 #HeadBallsDay #EdBallsDay https://t.co/nOWoqSJKEI" / Twitter Dr Russell Arnott on Twitter: "As well as having the largest penis-to-body length ratio on Earth, DYK the barnacle also has testicles on its head? 🏔️🍆 #HeadBallsDay #EdBallsDay https://t.co/nOWoqSJKEI" / Twitter](https://pbs.twimg.com/media/E0Dpav-WUAIyqMV.png)
Dr Russell Arnott on Twitter: "As well as having the largest penis-to-body length ratio on Earth, DYK the barnacle also has testicles on its head? 🏔️🍆 #HeadBallsDay #EdBallsDay https://t.co/nOWoqSJKEI" / Twitter
![Barnacles Have the largest penis to body size ratio of the animal kingdom - Fun Fact Fox - quickmeme Barnacles Have the largest penis to body size ratio of the animal kingdom - Fun Fact Fox - quickmeme](http://m.quickmeme.com/img/ed/edd489281c589d160f39dd4bb750d0e14268195d9f805bd228eddd7847ce074a.jpg)
Barnacles Have the largest penis to body size ratio of the animal kingdom - Fun Fact Fox - quickmeme
![CSIRO on Twitter: "#4oclockfact Barnacles have the largest penis-to-body ratio in the animal kingdom. ^NG https://t.co/uG33zPXCrr" / Twitter CSIRO on Twitter: "#4oclockfact Barnacles have the largest penis-to-body ratio in the animal kingdom. ^NG https://t.co/uG33zPXCrr" / Twitter](https://pbs.twimg.com/media/DfINxw_VMAAbb6j.jpg)