One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Unsinkable Sam (nickname of a German ship's cat) who served on 3 warships, one German, two British, all sank in action. The cat survived each sinking, floating away on wooden planks to rescue.
19
Condoms were originally made of animal intestines or linen.
347
Gorillas can catch human colds and other illnesses.
205
The colossal squid has the largest eyes in the world.
4
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8