The Basenji dog is the only dog that is not able to bark.
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There are approximately three chickens for every human on Earth.
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The largest breed of rabbit is the Flemish Giant.
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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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Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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