Cats recognise the voice of their owner, but never evolved to care.
22
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 world’s largest frog, the Goliath frog, can grow over 13 inches in length and can jump up to 10 feet in a single bound.
8
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Dolphins have names for one another.
18
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4
Denmark has twice as many pigs as there are people.
66