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

Pigs (Pig, Swine) are vertebrates, mammals, domestic animals, and ancient omnivorous mammals, mainly divided into domestic pigs and wild boars. Currently, people believe that pigs are the abbreviation for animals in the pig family, and pigs have different physical characteristics depending on their breed; Usually characterized by large ears, long head, short limbs, straight nose, fat body, and narrow waist and back. The hair is coarse and hard, and the fur colors are usually white, pink, black, brown, and floral. Domestic pigs are a subspecies of wild boars that have been domesticated by humans. They have shorter tusks than wild boars and are one of the domesticated livestock by humans.