Cows can sleep standing up, but they can only dream lying down.
745
The Platypus used to be considered a myth like Bigfoot and the Yeti.
18
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
The most expensive cow in the world was sold in 2009 for $1.2 million.
-3
Squirrels forget where they hide about half of their nuts.
698
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Jumping fleas can accelerate 50 times faster than the space shuttle.
218