Kaitlyn Maher
— Tiny (voice)
Jed Rees
— Roland
Tom Everett Scott
— Charlie (voice)
David DeLuise
— Steven
Carla Jimenez
— Ida
George Newbern
— Bark (voice)
John Ratzenberger
— Mutt (voice)
Makenzie Moss
— Lou
Diedrich Bader
— Kano (voice)
Bonnie Somerville
— Emily Rose (voice)
Jonathan Mangum
— Rover (voice)
Obba Babatundé
— Big Ears (voice)
Chris Coppola
— Tune (voice)
Maulik Pancholy
— Raj (voice)
Brian Hull
— Murray (voice)
Juicy J
— P-Diggy (voice)
Ziggy Marley
— Dog Gnarly (voice)
Nikki Blonsky
— Lady Paw Paw (voice)
Steve Valentine
— Simon Growl (voice)
Jared Gertner
— Puglay (voice)
Matt Weber
— Blake Sheltie (voice)
Danny Woodburn
— Bulldog (voice)
Lombardo Boyar
— Doberman Guard (voice)
Hugh Scott
— Westie (voice)
Susie Wall
— ETV Correspondent
Jason Spisak
— Australian Shepherd (voice)
Jesse Filkow
— Boy
Christina Sicoli
— Toots
Nicholas Harrison
— Owen
Jocelyne Loewen
— Sally