The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328
Cows can sleep standing up, but they can only dream lying down.
745
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
When dragonflies mate, their tails form a love heart.
22
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25