The face of the bag cat, the pattern on the face of the bag cat is asymmetric.

1. The painted face of a puppet cat is hereditary, which is related to the inheritance of coat color. Because the inheritance of coat color is controlled by multiple genes, the probability of doll cat's painted face is also random.

2. Some parents are puppets with solid colors or neat patterns, and there will also be puppets with faces painted, which is random and uncertain.