It is a common domestic animal belonging to the mammalian order Artiodactyla and the pig family. Known for its strong adaptability, high reproductive rate, and fast growth rate. There are various breeds, including meat pigs, dairy pigs, and dual-purpose pigs. Usually larger in size and with delicious meat, it is an indispensable source of meat in daily diet. Breeding has a long history, as early as the Neolithic Age, humans began to domesticate and raise pigs. In addition, it also holds a place in culture. In Chinese zodiac culture, the pig is one of the twelve zodiac animals, symbolizing wealth and auspiciousness. In medical research, pig organs are highly similar to human organs, making them important subjects for organ transplantation research