Penguins have a gland above their eye that turns saltwater into freshwater.
12
Condoms were originally made of animal intestines or linen.
347
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
A 42-foot sperm whale has about 7 tons of oil in it.
209
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Early American humans hunted car-size armadillos and used their shells for houses.
12