Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
There are approximately three chickens for every human on Earth.
13
The reindeer is the only mammal that can see UV light.
17
A domestic cat can sprint at about 31 miles per hour.
274