The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Lurch, a Watusi bull, had the largest horns in the world.
32
A puppy is born blind, deaf, and toothless.
16
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
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255