![Zoe Cormier on Twitter: "The penises of cats bear barbs a millimetre long. "Penile spines" - this years hot trend? #SexDrugs @DaCapoPR http://t.co/eRVeEU3W5i" / Twitter Zoe Cormier on Twitter: "The penises of cats bear barbs a millimetre long. "Penile spines" - this years hot trend? #SexDrugs @DaCapoPR http://t.co/eRVeEU3W5i" / Twitter](https://pbs.twimg.com/media/CA9nyROWkAEeJJZ.jpg)
Zoe Cormier on Twitter: "The penises of cats bear barbs a millimetre long. "Penile spines" - this years hot trend? #SexDrugs @DaCapoPR http://t.co/eRVeEU3W5i" / Twitter
Penis: penile barbs illustration | cats | Vetlexicon Felis from Vetlexicon | Definitive Veterinary Intelligence
![Australian researchers discover why only two of echidna's four penis heads become erect at one time | Australia news | The Guardian Australian researchers discover why only two of echidna's four penis heads become erect at one time | Australia news | The Guardian](https://i.guim.co.uk/img/media/d3fadd01edc9b19f597c1f7d3638581ac85ee822/0_108_1440_864/master/1440.jpg?width=445&quality=85&dpr=1&s=none)