When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Penguins have a gland above their eye that turns saltwater into freshwater.
12
The elephant brain weighs about 6,000g.
274
The Pistol Shrimp can snap its claws together to create a sound of 218 decibels, louder than as supersonic jet at full speed. It only lasts for 1 millisecond. The snapping action also creates a bubble that is greater than 5000 Kelvin, close to the surface temperature of the sun.
21
Mosquitoes don't just bite you, they also pee on you.
11
A domestic cat can sprint at about 31 miles per hour.
274