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Almost all mammals live for around 1 billion heartbeats.
For a rabbit, which has a quick pulse, it takes about 3 years to reach a billion heartbeats, but a slow-pulsed elephant can go more than 80 years.
Only humans can push their hearts past 2 billion, thanks to modern medicine, food preservation technology, and water purification.
(Source, Source 2, Source 3)
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