Christine Cavanaugh, a prolific voice actress whose characters included the titular character of "Babe," has died. She was 51. Cavanaugh's sister Deionn Masock confirmed Tuesday that Cavanaugh died Dec. 22 at her home in Utah. An obituary notice was also published in Tuesday's Los Angeles Times. Masock says the cause of death isn't known. Cavanaugh lent her voice to many of the 1990s indelible cartoon characters, including Chuckie Finster in Nickelodeon's "Rugrats," Dexter on the Cartoon Network's "Dexter's Laboratory" and the live-action piglet of 1995's "Babe."