Figure 1. The phenotype spectrum of Xiang pig. Originally, one boar, except for the characteristic facial wrinkles, were only a few wrinkles on the side of the trunk and no wrinkles on the buttocks (A). Gradually, it spread to other individuals. There were obvious wrinkles on the trunk and hip sides (B). Finally, deep and wide wrinkles were seen in a few individuals (C), but no obvious wrinkles were seen in normal Xiang pigs (D).