For Valentine's Day this year, we're gonna look at some interesting facts about the hearts of animals. (Yes, I know it's kinda nerdy.)Did you know:
~Octopuses have three hearts~
~The hearts of pythons beat faster at mealtime~
~The heart of the blue whale is as big as a car~
~The smaller the animal, the larger the heart rate~
~A zebrafish can regenerate its heart~
~A manatee's heart rate slows down by half during a long dive~
HAPPY VALENTINE'S DAY!
sources: http://blog.nwf.org/2008/02/10-animal-heart-facts-for-valentines-day/
http://www.cardio-research.com/quick-facts/animals
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