South Korea, also known as Republic of Korea is a nation located in East Asia. It is a peninsula with 3 parts of its nation facing the sea; east, west and south. There are numerous wildlife existing in Korean Peninsula. The characteristics of the wild mammals in Korea is that despite South Korea's small territory, there are many medium and large sized animals. It is natural characteristic that medium and large sized animals require large land and vast amount of food to survive. The characteristic of fauna in South Korea follows the regional aspect that the nation is connected to the wider Eurasian continent, resulting, surviving mammals to also have continental elements. History Aristotle primarily divided 'sensitive' biological organisms into animals and 'non-sensitive' biological organisms as plants. Unlike livestock, which have become tamed for at least a few century and have a much different appearance and character to their inhabitants in the wild, wild animals have intrinsic characteristics. People are accustomed to be more familiar to livestock and often know their original form as livestock. But, the difference between the livestock and wild fauna is that livestock evolved in a direction favorable to human, whilst other fauna still consist their wild instinct. To have a clear insight of South Korea's wild fauna, In the case of wolves, unlike dogs that evolved to actively pursue cooperation with humans, they do not show any reliance on humans. The wild version of the pig, the Wild Boar, is larger on average than the pigs used for food, and also has long hair with sharp tusks. During the Japanese colonial era, vast number of wild fauna were poached leading some of the species to be threaten to potential extinction. Initially, the wild Tiger, which inhabited on the Korean Peninsula was a Siberian tiger species. It was very large in its size and large number existed throughout the nation. However, as part of the Korean annihilation policy of the Joseon Dynasty, Japanese hunters were invited to hunt tigers. It is well known that tigers are originally the culmination of the food chain, yet, during this period of the time nearly 800 were hunted as the Japanese colonial rule, leading the species itself to face potential extinction. Currently, there are only few left close on the border to China. Again, the Leopard on the Korean Peninsula, which had clear stripes and larger size compared to other