Facts about Animals Heart
The heart of a blue whale is as big as a car.
Scientists have re-created the heart of a rat and it even started beating!
Pythons grow bigger hearts at mealtimes.
A blue whale's heart beats six times a minute (next to a human's 70 times)
A manatee's heart rate slows down by half during a long dive.
A giraffe depends on it's powerful heart that weighs up to 12kg so that it can fight the force of gravity up that long neck to the head.
Frogs and lizards have three chambers whereas birds and mammals have four.
The human heart beats roughly 35 million times a year.
Octopuses have three hearts.
Dogs have a larger heart to body mass ratio than all other mammals.
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