Sharks have been on the planet longer than trees.
14
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
12
Penguins have a gland above their eye that turns saltwater into freshwater.
12
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Only 3% of bird species have penises.
0
Cows can sleep standing up, but they can only dream lying down.
745
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47