Male lizards and some reptiles have hemipenes, which can prolapse and require immediate attention to prevent complications. Prolapsed hemipenes can often be treated at home with lubrication, warm ...

More than 10,000 reptile species in every shape and size scurry and slither across Earth, from garter snakes to crocodiles — and their nether regions are just as wildly varied. From spiky penises to ...

This includes two separate hemipenes, which are the snake equivalent to a penis that pop out of the body during sex. Here, scientists determined that although the right-side reproductive system of ...

A lizard's penis evolves six times faster than any of its other parts, a new study finds. Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive content. The study ...