polarbearfacts.net
Polar Bear Organs - Polar Bear Heart, Lungs, Brain, Kidney • PolarBearFacts.net
The polar bear’s heart is slightly larger than the human’s heart but it is less than one-third of the hippo’s heart. The four-chambered bear’s heart consists of left and right ventricles as well as left and right auricles. i suppose you might like to learn more about polar bear organs.