Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Dogs sometimes fake being sick to get attention.
26
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402