Beware: you can't unsee these pics.
Here's the thing about scientists: they may be brilliant and spend most of their time researching and discovering things, but they can be goofy and hilarious, too.
When you're spending hours putting one drop of liquid on a slide or studying the mating habits of dung beetles, you can get a little stir crazy. And what better way to let off steam than to tweet pictures of animal genitalia?
#JunkOff is taking over the internet with it's often disgusting, outrageous, and completely true pictures of animals and their junk. These photos may be safe for work (or not), but it's definitely not something you want to look at before a meal.
Here's some penguins getting busy.
2. Echidna (AKA Spiny Anteater)
Everything about the Echidna is unique, especially his four-headed penis.
You don't want to mess with this big boy under any circumstances.
Now you know why they say, "Hung like a horse."
Yes, that spiral is exactly what you think.
Tiny screaming alien or alligator penis — you decide.
Look closely — underneath this wasted lemur is genitalia.
8. Proboscis monkey
Just letting it all hang out.
Relaxing, doggie style.
That frog is packing some heat.
So cute ... balls and all.
"You'd be surprised at what I'm hiding under my shell."
Slimy! Two slugs making sweet, sweet love.
14. Baby monkey
A tiny monkey with his tiny penis.
His body may blend into the environment, but his penis sticks out like a sore thumb ... or something.
Cats are wonderful animals, known for their soft fur, loving nature, and barbed penises.