Sloths take two weeks to digest their food.
243
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
The cat brain weighs about 30g.
167
In Australia, there are spiders big enough to eat snakes.
20
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
Only 3% of bird species have penises.
0