Condoms were originally made of animal intestines or linen.
347
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
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
The largest earthworm on record was found in South Africa and measured 22 feet.
151
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
Jumping fleas can accelerate 50 times faster than the space shuttle.
218