Are human beings naturally vegetarians or meat eaters? With the advancement of science in our modern science, this question can be easily answered.
Thirdly, unlike human beings and herbivorous, carnivorous animals have stronger hydrochloric acid in their stomach that is twenty times stronger than herbivorous. From here we can see that the digestive system of carnivorous animals is much stronger than human beings and herbivorous animals. Furthermore, the small intestine of the carnivorous animals is short while the large intestine is even and smooth. It is only three times the length of its body. In this way the flesh will be digested swiftly and will not stay too long in the body, which will lead to the process of decay.
By comparing the growth of the jaw and teeth, the length of small and large intestines and the digestive system between herbivorous and carnivorous animals, we can see that human beings are actually vegetarians in nature, which only suitable to eat vegetarian food that contains high fibers in order to live healthily.