Juveniles.

(1) Existing law establishes the jurisdiction of the juvenile court, which may adjudge a child to be a dependent of the court under certain circumstances, including when the child suffered, or there is a substantial risk that the child will suffer, serious physical harm. Existing law establishes the grounds for removal of a dependent child from the custody of the child's parents or guardian. Under existing law, a proceeding in the juvenile court to declare a child to be a dependent child of the court is commenced by a social worker who files a petition with the court. Existing law also requires a social worker to investigate whether a petition should be filed with the court whenever any…