The giraffe heart is quite a powerful pumping machine.
A giraffe’s heart can weigh up to 22 pounds and about 2 feet long in size.
It must produce about double the normal blood pressure compared to other large mammals to maintain blood flow to the brain.
The giraffe’s heart has to be big enough to counter gravity and feed the brain at the top of the giraffe’s long neck, which can sometimes be as long as eight feet.
Some bigger giraffes have hearts that weigh up to 29 pounds or more, and they pump three times harder and more efficiently than the human heart.