The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
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
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
When the "Elephant Whisperer" Lawrence Anthony died, a whole herd of elephants arrived at his house to mourn him.
25
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217