Ben Stiller

Alex (voice)

Chris Rock

Marty (voice)

David Schwimmer

Melman (voice)

Jada Pinkett Smith

Gloria (voice)

Sacha Baron Cohen

Julien (voice)

Cedric the Entertainer

Maurice (voice)

Andy Richter

Mort (voice)

Tom McGrath

Skipper / Policeman #1 (voice)

Frances McDormand

Chantel DuBois (voice)

Jessica Chastain

Gia (voice)

Bryan Cranston

Vitaly (voice)

Martin Short

Stefano (voice)

Chris Miller

Kowalski (voice)

Christopher Knights

Private (voice)

Conrad Vernon

Mason / Policeman #2 (voice)

Vinnie Jones

Freddie the Dog (voice)

Steve Jones

Jonesy the Dog (voice)

Nick Fletcher

Frankie the Dog (voice)

Paz Vega

Horses (voice)

Frank Welker

Sonya (voice)

Danny Jacobs

Croupier / Circus Master (voice)

Dan O'Connor

Casino Security / New York City Mayor (voice)

Eric Darnell

Comandante / Zoo Official / Zoo Announcer (voice)

Stephen Kearin

Policeman #4 (voice)

Emily Nordwind

Zoo Official (voice)

Asucena Jimenez

Kid in Crowd (voice)