Debra Toffan explained that while the show auditioned young girls for the role of Arthur's sister, the "husky" sound of young boys' voices helped capture the essence of "a rough-and-tumble little girl ...

Arthur, the bespectacled aardvark beloved by generations of viewers, is finally about to start the fourth grade. And in the new school year, he and his pals will befriend some new classmates -- ...