The cat brain weighs about 30g.
167
Denmark has twice as many pigs as there are people.
66
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
Dolphins have names for one another.
18
Early American humans hunted car-size armadillos and used their shells for houses.
12
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1