Elephants are among the most emotional creatures in the world - they have even been known to rescue other animals, such as trapped dogs.
25
There wasn't a single pony in the Pony Express, just horses!
57
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Armadillos can get leprosy.
13
At birth, a panda bear is smaller than a mouse.
40
The smallest known dinosaur is Compsognathus.
113
Bats always turn left when exiting a cave.
40