The reindeer is the only mammal that can see UV light.
17
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
The two oldest cats on record lived to 38 and 34 years old, both were owned by the same owner and lived off a diet of bacon, eggs, broccoli and coffee.
12
A cow produces around 200,000 glasses of milk in her lifetime.
373
Two dogs were among the Titanic survivors.
262