Creatures with multiple hearts

You might know by now that there are animals, like the octopus, who have more than one heart. The reason for the multiple hearts is simple – to pump blood to various parts of the body, when one heart cannot handle the job on its own.

A few animals with more than one heart:

  • 3 for the octopus.
  • 3 for the squid.
  • 3 for the cuttlefish.
  • 4 for the hagfish.
  • 5 for the earthworm.
  • 13 for cockroaches!

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