Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
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Vanilla flavoring is sometimes made with an ingredient from beaver pee.
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When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
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Gorillas can catch human colds and other illnesses.
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