Does crocodile blood mix?

The crocodile belongs to the class of reptiles. And of all reptiles, crocodiles have the most perfect circulatory system. What distinguishes them from all other representatives of this class is the four-chambered heart. In his heart, the ventricles and atria are completely separated from each other, however, there is a rudimentary opening, called the Pannitz opening, through which the right and left aorta can communicate. Thus, some of the blood from the left ventricle can enter the right and mix.