Condoms were originally made of animal intestines or linen.
347
Female kangaroos have three vaginas.
2
Lurch, a Watusi bull, had the largest horns in the world.
32
Lobsters have blue blood.
476
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
12
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17