Just considering the respiratory system, birds were structurally more advanced than humans, though their oxygen utilization rate was lower. However, their ventilation volume was enormous. Every inhalation and exhalation in a bird's body involved two air exchanges, making it far more efficient than human lungs.
But Taotie lungs combined humanity's high oxygen utilization with birds' high air utilization. They had both. Such lungs were incredibly advanced! They allowed them to adapt to many extreme environments. For example, they absolutely would not need oxygen tanks atop Mount Everest.
Then there were their ribs. Their ribs were sturdier, and their skeletal strength was several times that of humans. That aside, their massive bodies naturally required stronger bones for support; otherwise, they would collapse under their own weight.
But their ribs were plate-like, more akin to bony armor plates than ribs.
Then there was the Taotie heart. Taotie hearts were likewise more advanced than human hearts. Like canine hearts, different blood vessels could supply different regions of their cardiac muscle. If one became blocked, others could take over, unlike humans... who had only one.
Once it became blocked, bypass surgery and the like would be necessary.
There were also the eyes. Human eyes were rather baffling when one thought about them. Their structure was complex, with the retina serving as the basis of vision and primarily responsible for "detecting light and forming images."
The retina consisted of three layers of cells: photoreceptor cells, bipolar cells, and ganglion cells. In theory, the photoreceptor cells should have been at the front, since they were supposed to first receive light signals from the outside world. Yet in reality, they had been placed backward.
As a result, light had to pass through every cell, along with blood and tissue, before reaching the receptors at the back of