Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Dogs have been man's pet for over 14,000 years.
224
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
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4