Condoms were originally made of animal intestines or linen.
347
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
A scorpion can hold its breath for up to 6 days.
19
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40