Sam Ballard, who died at the age of 28, ate a slug at a friend's party for a dare while still a teenager. The consequences ...

The animal kingdom gets quite competitive when it comes to penises, sprouting designs meant to scoop out any rival sperm that’s still lingering in the vagina. Often this comes in the form of ...

The banana slug has a single lung, which has an external breathing pore, and it eats with its radula, a tongue-like body part that’s covered in rows of microscopic teeth. Like all gastropods ...

Hypnotizing footage reveals a never-before-seen swimming sea slug that eats using a large jelly-like hood and glows to defend ...

Monterey Bay Aquarium Research Institute scientists have discovered Bathydevius caudactylus, a new species of glowing sea slug that lives deep in the ocean.

Intertwining together, the two slugs locked into a tight corkscrew formation ... From behind their large mantles (a section of their body right behind their head), two penises emerged, almost ...

One of the three even lost and regrew its body twice. Two different species of Japanese sea slugs did this regeneration trick. Other creatures can cast off body parts when needed, like when some ...

Slugs were the inspiration for a new kind of ... The "bio-glue" is incredibly strong, moves with the body and crucially, sticks to wet surfaces. The team at Harvard University have even used ...

Meet the leaf sheep, a cute little animal-plant hybrid that can photosynthesize to generate extra energy within its body.

This story was excerpted from Jessica Camerato’s Nationals Beat newsletter. To read the full newsletter, click here. And subscribe to get it regularly in your inbox.