The origin of Chinese dragon is not certain, but some scholars believe that it originated from totems of different tribes in China. Some have suggested that it comes from a stylized depiction of existing animals, such as snakes, fish, or crocodiles. For example, the Banpo site of the Yangshao culture in Shaanxi featured an elongated, snake-like fish motif. The theory of snakes or fish as the origin of the Chinese dragon is not widely accepted.
An alternative view, advocated by He Xin, is that the early dragon depicted a species of crocodile, specifically, Crocodylus porosus, the saltwater crocodile, which is the largest living reptile, and once ranged into China during ancient times.

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The crocodile is known to be able to accurately sense changes in air pressure, and be able to sense coming rain. This may have been the origin of the dragon's mythical attributes in controlling the weather, especially the rain. The association with the crocodile is also supported by the view in ancient times that large crocodiles are a variety of dragon. For example, in the Story of Zhou Chu, about the life of a Jin Dynasty warrior, he is said to have killed a "dragon" that infested the waters of his home village, which appears to have been a crocodile.
Others have proposed that its shape is the merger of totems of various tribes as the result of the merger of tribes. The coiled snake or dragon form played an important role in early Chinese culture. Legendary figures like Nüwa  and Fuxi  are depicted as having snake bodies. Some scholars have noted that a myth arose that the first legendary Emperor of China Huang Di (Yellow Emperor) used a snake for his coat of arms. According to the myth, every time he conquered another tribe, he incorporated his defeated enemy's emblem into his own, thus explains why the dragon appears to have features of various animals.
Jade badges of rank in coiled form have been dated to the Hongshan culture.

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