Cavanaugh voiced Dexter from the Cartoon Network series "Dexter's Laboratory," seen on the right. (Saurabh Das / AP)
Cavanaugh also lent her voice to Chuckie, the red-haired baby on Nickelodeon's "Rugrats." (Adam Nadel / AP)
One of Cavanaugh's most well known roles was as the titular pig in the Oscar-winning "Babe." (Carolyn Johns, Universal Studios / AP)