Denmark has twice as many pigs as there are people.
66
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Cows can sleep standing up, but they can only dream lying down.
745
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Female kangaroos have three vaginas.
2
Giant Anteaters' front legs look like a panda.
48