Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
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The Savannah is the largest domestic cat breed. It resembles a small leopard and behaves like a dog. They can grow up to 40 lbs, have an eight foot vertical jump, and can be trained to walk on a leash and play fetch.
17
In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
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