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
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
Two dogs were among the Titanic survivors.
262
Early American humans hunted car-size armadillos and used their shells for houses.
12