Lee Pace character Phil Winslow
Judy Greer character Debbie Winslow
Owen Wilson character Marmaduke (voice)
Emma Stone character Mazie (voice)
George Lopez character Carlos (voice)
Caroline Sunshine character Barbara Winslow
Finley Jacobsen character Brian Winslow
Steve Coogan character Raisin (voice)
Christopher Mintz-Plasse character Giuseppe (voice)
Fergie character Jezebel (voice)
Kiefer Sutherland character Bosco (voice)
Damon Wayans Jr. character Thunder (voice)
Marlon Wayans character Lightning (voice)
Sam Elliott character Chupadogra (voice)
William H. Macy character Don Twombly
David Walliams character Anton Harrison
Glenn McCuen character Bodie
Raugi Yu character Drama Trainer
Chris Colfer character Drama Dog #2 (voice)
Josh Gad character Bandana Dog (voice)
Ash Lee character Male Executive
Heather Doerksen character Female Executive
Madison Desjarlais character Brunette Girl
Nicole Muñoz character 3rd OC Girl
Christopher Attadia character Jock
Jason Bryden character Man on Bench
Izaak Smith character Basketball Captain
Keith Dallas character Emergency Road Worker
P.J. Prinsloo character Lead Fireman
Colin Decker character Fireman
Charles Jarman character Fireman
Garvin Cross character Fireman
Chris Bradford character Fireman
Hope Levy character Afghan #1 (voice)
Randall Montgomery character Sweater Dog (voice)
Anjelah Johnson-Reyes character Afghan #2 (voice)
Devon Werkheiser character Drama Dog #1 / Shroom Dog #2 / Golden Dog / Cocker Spaniel (voice)
Hudson Thames character Delinquent Dog (voice)
Francisco Ramos character Purse Dog #1 (voice)
Bernardo de Paula character Purse Dog #2 (voice)
Eddie 'Piolin' Sotelo character Purse Dog #3 (voice)
Jack McGee character Dalmatian (voice)
Liza Lapira character Party Dog #1 (voice)
King Kedar character Surfing Award Dog / Beach Dog #4 (voice)
Todd Glass character Doberman / Shasta (voice)
Ryan Devlin character Beach Dog #2 (voice)
Jeffrey Garcia character Beach Dog #3 (voice)
