Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Cats recognise the voice of their owner, but never evolved to care.
22
When dragonflies mate, their tails form a love heart.
22
A cow produces around 200,000 glasses of milk in her lifetime.
373
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
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
Dogs have been man's pet for over 14,000 years.
224