Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Cats sleep for 70% of their lives.
8
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
Cats recognise the voice of their owner, but never evolved to care.
22
Alligators can live up to 100 years.
337
The head of a jellyfish is called the "Bell."
6
An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
59
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