The lifespan of mammals is about 1 and a half billion heartbeats.
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The oldest living person smoked cigarettes from the age of 21 to 117.
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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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The oldest creature ever found was Ming the clam at an admirable 507 years old.
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