The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
When cats are happy, they may squeeze their eyes shut.
10
A group of unicorns is called a blessing.
304
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268