Dee Wallace
Donna Trenton
Danny Pintauro
Tad Trenton
Daniel Hugh Kelly
Vic Trenton
Christopher Stone
Steve Kemp
Ed Lauter
Joe Camber
Kaiulani Lee
Charity Camber
Billy Jayne
Brett Camber
Mills Watson
Gary Pervier
Sandy Ward
Bannerman
Jerry Hardin
Masen
Merritt Olsen
Professor
Frank Welker
Cujo (voice; uncredited)
Clare Torao
Reporter
Arthur Rosenberg
Roger Breakstone
Robert Craighead
Joe MaGruder