Penguins have a gland above their eye that turns saltwater into freshwater.
12
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Mosquitoes don't just bite you, they also pee on you.
11
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
Condoms were originally made of animal intestines or linen.
347