Claim: Judith Barsi was lent her voice to animated characters.

Judith Eva Barsi -LRB- June 6 , 1978 -- July 25 , 1988 -RRB- was an American child actress in the mid - to late 1980s . She began her career in television , making appearances in commercials and television shows , and later appeared in the films Jaws : The Revenge , The Land Before Time , and All Dogs Go to Heaven , supplying the voice for animated characters in the latter two . She and her mother , Maria , were both killed in July 1988 as a result of a double murder -- suicide perpetrated by her father , József .