Given the magnitude of juvenile sexual offenses and the toll they take on society, it is surprising they were not consistently taken seriously until at least the 1970s. As it is evident from the material presented in this chapter, perhaps the most overarching principle pertaining to juvenile sex offenders is that they are a heterogeneous population. Having said this, they do share some commonalties. A number of sex offender categorization schemes are described. The chapter presents different types of juvenile sex offenders along with selected case vignettes. The two primary physiological assessments used in sex offenders are phallometry and polygraphy. Different sexual offender pathways are an interesting concept to consider when looking at risk of recidivism. Becker and Kaplan described three paths the juvenile sex offender takes: dead-end, delinquency, and sexual interest paths. For most sex offenders a "cure" is not realistic, and instead, an ongoing management strategy is required.