Trailer
 | Matthew Modine as Thomas P. Johnson / Voice of Fluke |
 | Nancy Travis as Carol Johnson |
 | Eric Stoltz as Jeff Newman |
 | Max Pomeranc as Brian Johnson |
 | Ron Perlman as Sylvester |
 | Jon Polito as Boss |
 | Bill Cobbs as Bert |
 | Federico Pacifici as Prof. Santini |
 | Clarinda Ross as Jane, Tom's Secretary |
| Adrian Roberts as Night Guard |
 | Bart Hansard as Day Guard |
 | Deborah Hobart as Dogpound Vet |
 | Libby Whittemore as Libby, the Housekeeper |
 | Collin Wilcox Paxton as Bella |
 | Samuel L. Jackson as Rumbo (voice) |
| Sam Gifaldi as Young Fluke (voice) |
 | Comet as Fluke |
 | Barney as Rumbo |
| Directing | |
| Carlo Carlei | Director |
Crew | |
| Michael Runyard | Stunts |
Writing | |
| Carlo Carlei | Screenplay |
Production | |
| Paul Maslansky | Producer |
| Lata Ryan | Producer |
| Jon Turtle | Executive Producer |
| Terri Ferraro | Associate Producer |
Sound | |
| Carlo Siliotto | Original Music Composer |
Camera | |
| Raffaele Mertes | Director of Photography |
Editing | |
| Mark Conte | Editor |
Production | |
| Lynn Stalmaster | Casting |
Art | |
| Hilda Stark | Production Design |
| Richard Fojo | Art Direction |
| Dayna Lee | Set Decoration |
Costume & Make-Up | |
| Elisabetta Beraldo | Costume Design |
Writing | |
| James Herbert | Novel |
| James Carrington | Screenplay |
Production | |
| Tom Coleman | Executive Producer |
