It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
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
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
One in three dog owners say they have talked to their pets on the phone.
427
The colossal squid has the largest eyes in the world.
4
The cat brain weighs about 30g.
167