Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
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
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
The world’s largest frog, the Goliath frog, can grow over 13 inches in length and can jump up to 10 feet in a single bound.
8
When dragonflies mate, their tails form a love heart.
22
Cats and dogs can hear ultrasound.
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