It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
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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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Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
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There are approximately three chickens for every human on Earth.
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The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
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Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
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