Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Penguins have a gland above their eye that turns saltwater into freshwater.
12
A 42-foot sperm whale has about 7 tons of oil in it.
209
Jaguars frequently get high by eating hallucinogenic roots, which also increases their senses for hunting.
6
Sheep, goats, octopuses, and toads have rectangular pupils.
7
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