The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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Tigers can see 6 times better at night than humans.
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The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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The oldest recorded elephant lived for 82 years.
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Parrot parents "name" their children with a signature call.
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Early American humans hunted car-size armadillos and used their shells for houses.
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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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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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