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I never knew before that some animals can have heartbeats unimaginably so very slow. The heart has to pump blood through its intricate system of arteries, veins and valves towards the lungs to remove carbon dioxide and to allow general blood circulation in an animal's body through a major artery, the aorta. This mechanism serves the following functions: provide much needed oxygen, remove carbon dioxide from the blood, distribute nutrients, and remove bodily waste in general.
Among those animals known to have the slowest heartbeat are the blue whales at four heartbeats per minute. It can afford to do so because of its big size. Browsing the internet, I discovered that a relatively smaller animal can even have a slower heartbeat at only two heartbeats per minute. These are the crocodiles.
Find out how crocodiles do it among other facts in a featured article titled "What Animal Has the Slowest Heartbeat Ever".
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