According to traditional Chinese medicine theory, people's physical constitutions vary in terms of degree of blood heat, categorized into cold and hot types.
Coincidentally, the person who first discovered Beastman genes was a westerner with considerable research in traditional Chinese medicine. After nearly a decade of specialized research on Beastmen, from the basic Wolf Girl to the Leopard Child, and then to the more horrifying Snake-man, and after nearly a hundred studies, he finally established the attribute classification of the Beastman system.
"However, the classification of cold-blooded and hot-blooded in Beastmen differs from that of the general animal kingdom. Those with a cold nature and no aggression are called cold-blooded Beastmen, while those with a violent and bloodthirsty nature are called hot-blooded Beastmen."
