Female kangaroos have three vaginas.
2
Denmark has twice as many pigs as there are people.
66
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
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
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
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