A person generally commits the criminal offense of sexual assault of a child—regardless of whether the person knows the age of the child at the time of the offense—if the person (1) causes the penetration of the anus or sexual organ of a child by any means; (2) causes the penetration of the mouth of a child by the sexual organ of the person; (3) causes the sexual organ of the child to contact or penetrate the mouth, anus, or sexual organ of the person or another person; (4) causes the anus of a child to contact the mouth, anus, or sexual organ of the person or another person; or (5) causes the mouth of a child to contact the anus or sexual organ of the person or another person.

The naming and definition of the criminal offense of sexual assault of a child varies from state to state. These criminal offenses are generally located in a state’s statutes—often in the penal or criminal code.

In Wyoming, sexual assault of a child is a serious criminal offense that is defined under Wyoming Statutes. The state's laws categorize various sexual acts involving children as sexual assault, and these include any form of sexual penetration or contact between a child and another person's genitalia, anus, or mouth, as described in the scenarios (1) through (5). It is important to note that under Wyoming law, the perpetrator's lack of knowledge regarding the child's age does not constitute a defense against these charges. The specific statutes that address these offenses provide detailed definitions and outline the penalties, which can be severe, including lengthy prison sentences and mandatory registration as a sex offender. The exact charges and penalties can vary depending on the circumstances of the case, such as the age of the child and the nature of the offense. An attorney specializing in criminal law in Wyoming would be able to provide more detailed information about the potential legal consequences of such an offense.