Bruce Willis

RJ (voice)

Garry Shandling

Verne (voice)

Steve Carell

Hammy (voice)

Wanda Sykes

Stella (voice)

William Shatner

Ozzie (voice)

Nick Nolte

Vincent (voice)

Thomas Haden Church

Dwayne (voice)

Allison Janney

Gladys (voice)

Eugene Levy

Lou (voice)

Catherine O'Hara

Penny (voice)

Avril Lavigne

Heather (voice)

Omid Djalili

Tiger (voice)

Sami Kirkpatrick

Bucky (voice)

Shane Baumel

Spike (voice)

Madison Davenport

Quillo (voice)

Paul Butcher

Skeeter (voice)

Zoe Randol

Mackenzie (voice)

Jessica DiCicco

Shelby (voice)

Debra Wilson

Debbie (voice)

Sean Bishop

Police Officer (voice)

Jeannie Elias

Janis (voice)

Kejon Kesse

Timmy (voice)

Sean Yazbeck

BBQ Barry (voice)

Geoffrey Pomeroy

Ranger (voice)

Joel McCrary

Dr. Dennis (voice)

Lee Bienstock

Lunch Table Larry (voice)

Brian Stepanek

Nugent the Dog (voice)

Steve Alterman

Additional Voices (voice)

Erin Lander

Additional Voices (voice)

Kirk Baily

Additional Voices (voice)

Jordan Orr

Additional Voices (voice)

Michaela Jill Murphy

Additional Voices (voice)

Michelle Ruff

Additional Voices (voice)

Nicholas Guest

Additional Voices (voice)

Greyson Spann

Additional Voices (voice)

David Hiller

Additional Voices (voice)

April Lawrence

Additional Voices (voice)

Bridget Hoffman

Additional Voices (voice)

Marcelo Tubert

Additional Voices (voice)

Sandy Holt

Additional Voices (voice)

Ariel Winter

Additional Voices (voice)

Talula Holt

Additional Voices (voice)