What kind of creatures can survive in nature? Even as powerful as rhinos, they are on the verge of extinction, but giant pandas, which eat a single diet and have extremely poor digestive systems, have survived to this day under the natural law of "survival of the fittest". Darwin's father may not have thought that humans have transcended the theory of evolution. Rhino horns make it difficult for rhinos to survive, but the cute little appearance of pandas makes their little lives comfortable!