There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
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It has been estimated that a bite from a grizzly bear can crush a bowling ball.
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Rattlesnake mating sessions have been known to last more than 22 hours.
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Gorillas can catch human colds and other illnesses.
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There's a lizard known as the 'Jesus Lizard' that can run across water.
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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.
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