Condoms were originally made of animal intestines or linen.
347
There are approximately three chickens for every human on Earth.
13
Sharks have been on the planet longer than trees.
14
Cats and dogs can hear ultrasound.
350
The Platypus used to be considered a myth like Bigfoot and the Yeti.
18
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Dolphins have names for one another.
18
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11