Early American humans hunted car-size armadillos and used their shells for houses.
12
There are approximately three chickens for every human on Earth.
13
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
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
Domestic pigs average a top speed of about 11 miles per hour.
182