A crocodile's special heart may help it digest large, bony meals.
By Carolyn Gramling, 00:00 AM October 20, 2006
Crocodiles may not cry real tears, but they do have special hearts.
A crocodile's heart may help it digest large, bony meals.
|U.S. Fish & Wildlife Service|
Like mammal and bird hearts, a crocodile's heart is a muscle that pumps blood. One side of the heart sends blood that is full of oxygen out to most of the body. The other side pulls blood back toward the lungs to give it an oxygen refill.
But crocodile (and alligator) hearts have an extra valve that mammal and bird hearts don't...
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