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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The colossal squid has the largest eyes in the world.
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Tigers can see 6 times better at night than humans.
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Sharks, like other fish, have their reproductive organs in their chests.
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A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
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