Some people believe that Chinese zodiac  originated from the worship of animals  This is because in primitive society, the level of human production is very low, pigs, cattle, sheep and other livestock are closely related to agricultural activities, and animal worship is born
In addition, animals such as tigers and snakes may threaten human safety and are often regarded as a symbol of power, and people will also form animal worship because of fear
Both cattle and pigs are related to farming, but they are far apart in the Chinese zodiac.