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
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Gorillas can catch human colds and other illnesses.
205
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12