What is the difference between pig, dolphin and pig?

All three mean pig, pig: the collective name for pigs.

豕(shǐ); long-mouthed pig. Hieroglyphics. The shape of the oracle bone characters is like a pig, with a long snout, a big belly, four hooves and a tail. A collective name for pigs.

Dolphin (tún); small pig

Pig (zhì); big pig.

Pigs are also called "劭tun (tún)". In ancient times, pigs were also called pigs, pigs, pigs, and also called rigid hyenas. It originally refers to a piglet, but also means pig. Often used to represent wealth and fertility, and to represent women. In ancient dialects, "彘" and "豨(xī)" also refer to pigs. "Dialect" says: "(Pig) is a link between east and west, or it is called pig", and "Southern Chu calls it pig". :

Pigs are vertebrates, mammals, domestic animals, and ancient omnivorous mammals. Divided into domestic pigs and wild boars. It is generally believed that pig is the abbreviation of Suidae. Pigs have different physical characteristics depending on the breed. But usually the main physical characteristics are big ears, long head, straight nose, and narrow waist and back. The hair is thicker and stiffer. According to different varieties, it is divided into white, pink, black, brown and flower colors.

Domestic pigs are a subspecies of wild boars that were domesticated by humans. They have shorter tusks than wild boars and are one of human domestic animals. Generally speaking, domestic pigs refer to pig species that are kept mostly for food by humans. .