The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Sheep, goats, octopuses, and toads have rectangular pupils.
7
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Denmark has twice as many pigs as there are people.
66
Cats sleep for 70% of their lives.
8