Denmark has twice as many pigs as there are people.
66
An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
10
The cat brain weighs about 30g.
167
A dairy cow can produce more milk when listening to music.
446
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
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2