Question

8 hearts are present in which species​

Answer 1

Explanation:

Currently, there is no animal with that amount of hearts. But Barosaurus was a huge dinosaur which needed 8 hearts to circulate blood upto it's head. Now, the maximum number of hearts is 3 and they belong to the Octopus.

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Answer 2

Answer:

Barosaurus was an ancient dinosaur with eight hearts.

Currently octopus are the only species having 3 hearts.