Photo: WeHeartIt

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.
2. Echidna (AKA Spiny Anteater)
Everything about the Echidna is unique, especially his four-headed penis.
3. Whale
You don't want to mess with this big boy under any circumstances.
12. Tortoise
"You'd be surprised at what I'm hiding under my shell."
15. Lizard
His body may blend into the environment, but his penis sticks out like a sore thumb ... or something.
16. Cat
Cats are wonderful animals, known for their soft fur, loving nature, and barbed penises.
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