Denmark has twice as many pigs as there are people.
66
Cats recognise the voice of their owner, but never evolved to care.
22
Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
2
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9