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
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
Penguins have a gland above their eye that turns saltwater into freshwater.
12
Cats and dogs can hear ultrasound.
350
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
Jumping fleas can accelerate 50 times faster than the space shuttle.
218