Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Early American humans hunted car-size armadillos and used their shells for houses.
12
Cats and dogs can hear ultrasound.
350
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
The reindeer is the only mammal that can see UV light.
17
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9