Only 3% of bird species have penises.
0
A group of pugs is called a grumble.
10
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 rare breed of pig that looks like a sheep.
14
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
The reindeer is the only mammal that can see UV light.
17
Sloths take two weeks to digest their food.
243