Wang Muai takes care of her mother's short message.

Because this problem is a "difference problem". Given that the mother's age is three times that of Xiao Wang, we can calculate Xiao Wang's age only by knowing the age difference between her mother and Xiao Wang Can.

The age difference between Xiao Wang and his mother can only be obtained through the age difference between Xiao Wang and his father and the age difference between his father and his mother.

Age difference = 12×3-4=32 years old.

If this question only asks Xiao Wang's animal sign, there is no need to ask his age.

According to: mouse, cow, tiger, rabbit, snake ... Mother is a snake, and father is four years older than mother, so it should be a mouse, and Xiao Wang is also a mouse.