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Because the 4 feet, when kept in a natural barefoot state, pump blood back up to the heart as they expand and contract with each step.
When the foot is set down on the ground, it expands and fills with blood. When the foot is picked up, it contracts and the blood is sent back up the hoof to the heart.
Roughly a liter of blood is pumped through the body between each 4 feet every 20 strides. So some may call the feet the other four hearts.
HOWEVER, with horseshoes, the hoof cannot expand, therefore reducing circulation, straining the horses heart more since it lost the use of its "four hearts" and that is part of the reason there is this natural horse, barefoot movement going on.
What else can I help you with?
Do sea horses have hearts?
Yes
What do horses do for there kids?
Well, horses bring joy and love to their kid's hearts.
What actors and actresses appeared in Hearts and Horses - 1913?
The cast of Hearts and Horses - 1913 includes: George Field Wallace Reid as Bill Walters
How many sets of valves does a horses heart have?
As in all mammals, horses have four valves in their hearts.
How many horses have 25 legs and heads?
A horse has 4 legs and 1 head. That is that 1 horse represents 5 of 25 legs and heads.So we can say that there are 5 horses (25÷5).
How many times a horses heart beat in a hour?
a horses hearts beats 3,300 to 3,900 times an hour. ..
Do horses have hearts?
Are they alive? Yes. They have a heart, physically and emotionally, same as you and I.
How many hearts does a hearts does a earthworm have?
They have 5 hearts. =)
Do earthworms have 16 hearts?
No!! the earth worm has 5 hearts
What is the moral of the book the hearts of horses by molly gloss?
santa eat the person and thats how he died
Why does the worm have multiple hearts?
Worms have 5 hearts. Worms have an organ that behaves like a heart, an aortic arch, they have five arches.
What creature has 5 hearts?
I think the animal that has 4 hearts is a earthworm, because in my science class i dissected a earthworm, i saw 4 different parts of tiny black hearts as my teacher said they were, so yes i am learning in 7th grade but i did learn a lot about the earthworm including the hearts. so that proves that the animal that has 4 hearts is.... the earthworms.
