The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
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The largest breed of rabbit is the Flemish Giant.
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Sloths take two weeks to digest their food.
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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!)
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Condoms were originally made of animal intestines or linen.
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The two oldest cats on record lived to 38 and 34 years old, both were owned by the same owner and lived off a diet of bacon, eggs, broccoli and coffee.
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