"Lub-DUB. Lub-DUB. Lub-DUB. The rhythm of every animal's heartbeat is different. Flick-dash flick-dash! Lub-DUB. Lub-DUB. Lub-DUB. From tiny meadow mice to tall giraffes to the octopus with three hearts, each animal's heart has its own beat, in tune with its body's needs"-- Provided by publisher.
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