Fun Facts About Animal Hearts

But not the arrow-through-the-heart Cupid kind. The amazing animal kind – from hummingbirds to whales, big and small, fast and slow. Here are some fun facts about hearts in the animal kingdom:

• A hummingbird’s heart rate can reach up to 1,000 beats per minute in some species

• A blue whale’s heart weighs about 400 pounds

• A cheetah’s heart rate can speed up to 250 beats per minute within seconds

• Octopuses have three hearts

• Although coronary artery disease is common in people, it is rare in cats and dogs

• Zebrafish can regenerate their hearts

• A seal’s heart rate can go as low as 10 beats per minute during an extended underwater dive

• Mammals have four-chambered hearts, many reptiles have hearts with three chambers and fish have just a two-chambered heart

• Giraffes have the highest blood pressure of any mammal, measuring a stratospheric 280/180

• A cow’s heart is the size of a human head

• Starfish, sea cucumbers and jellyfish seem to do fine with no heart at all – what do they send to their significant others on Valentine’s Day?

• The fairyfly has the smallest heart of any living creature the world which ranges from 0.139 to 0.55mm only.

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Content created and supplied by: KkCabobo (via Opera News )