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1) Diseases: In normal condition, diseases may be the most harmful to the survival of the giant pandas. The diseases in the digestive system, the respiratory system, the nervous system and the hemopoietic system are usually fatal, and they will have all kinds of tumors, the endoparasites and ectoparasites diseases, skin diseases, traumas and so on, which can affect the health and life-span of the giant pandas. Digestive system diseases: vomit, diarrhea, blood in stool, and ileuses; 2) Natural Enemies: The giant pandas hold themselves aloof from the world, but in the habitat, there are still some animals that are their enemies, such as the Asian golden cats, the leopards, the jackals, the wolves, the yellowthroated martens, etc, which will mainly attack the baby pandas, the sick ones, the weak ones and the aging ones. Because the young and strong giant pandas still haven't lost the ferocity of their flesh-eating ancestors, they will not be afraid in face of the strong ones, and make the enemies be scared. Once the giant pandas in the zoo that seem to be docile and na?ve are provoked, there will be wound accidents.
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