S.D. Codified Laws § 22-19A-7

Any person who willfully, maliciously, and repeatedly follows or harasses a child twelve years of age or younger or who makes a credible threat to a child twelve years of age or younger with the intent to place that child in reasonable fear of death or great bodily injury or with the intent to cause the child to reasonably fear for the child's safety is guilty of the crime of felony stalking. Felonious stalking is a Class 6 felony.