Stephen Tobolowsky Happy Chapman
Jennifer Love Hewitt Liz
Alan Cumming Persnikitty (voice)
Debra Messing Arlene (voice)
David Eigenberg Nermal (voice)
Bill Murray Garfield (voice)
Brad Garrett Luca (voice)
Christophe Beck Original Music Composer
Richard Kind Dad Rat (voice)
Nick Cannon Louis (voice)
Breckin Meyer Jon
John Davis Producer
Jimmy Kimmel Spanky (voice)
Alyson Stoner Kid Rat (voice)
Michael Monks Deputy Hopkins
Mark Christopher Lawrence Christopher Mello
Mel Rodriguez Security Officer
Crystal the Monkey Pet Monkey (uncredited)
Mathew Krentz Compositing Artist
Jerry Hauck Cop
Neil Machlis Executive Producer
Jim Davis Comic Book
Dean Cundey Director of Photography
Peter Hewitt Director
Juliette Goglia Little Girl
Bill Hoag Roy the Lodge Member
Joel Cohen Screenplay
Alec Sokolow Screenplay
Ben Kronen Older Man
Barbara Anne Klein Stunts
Evan Arnold Wendell
Eve Brent Mrs. Baker
Dan DeLeeuw Visual Effects Supervisor
Risa Bramon Garcia Casting
Michele Imperato Stabile Co-Producer
Daamen J. Krall Announcer
Alec Hammond Production Design
Peter E. Berger Editor
Michael A. Stevenson Editor
Angie Jones Animation
Brennan Dufresne Casting
Glenn Derry Pre-Visualization Supervisor
Brian Manis Executive Producer
Vanessa Campbell Miss Ace Hardware
Marie France Costume Design
Randee Reicher Dog Owner #2
Rufus Gifford Dog Owner #1
Susan Moore Dog Owner #4
Joseph Edward Taylor Frank
Ryan McKasson Dog Owner #3