*Whales are able to control the flow of blood to the heart and brain so that they do not suffer from lack of oxygen on deep dives.*
* The sperm whale is the size of four elephants.*
* The most common last name in the world is Wong.*
* An oyster can change its sex once every seven days. *
* The modern horse has evolved over 60 million years from a creature no bigger than a domestic cat. *
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