Patton Oswalt as Max (voice)

Kevin Hart as Snowball (voice)

Eric Stonestreet as Duke (voice)

Jenny Slate as Gidget (voice)

Tiffany Haddish as Daisy (voice)

Lake Bell as Chloe (voice)

Nick Kroll as Sergei (voice)

Dana Carvey as Pops (voice)

Ellie Kemper as Katie (voice)

Harrison Ford as Rooster (voice)

Chris Renaud as Norman / Additional Voices (voice)

Bobby Moynihan as Mel (voice)

Hannibal Buress as Buddy (voice)

Pete Holmes as Chuck (voice)

Henry Lynch as Liam (voice)

Tara Strong as Additional Voices (voice)

Sean Giambrone as Cotton (voice)

Meredith Salenger as Cat Lady (voice)

Michael Beattie as Lead Wolfdog / Skinny Cat (voice)

Kiely Renaud as Molly (voice)

Jessica DiCicco as Princess / Tiny (voice)

Garth Jennings as Hamster (voice)

David Acord as Additional Voices (voice)

Jaime Camil as Additional Voices (voice)

Antonio Raul Garcia as Additional Voices (voice)

Brian T. Delaney as Additional Voices (voice)

Terri Douglas as Additional Voices (voice)

Sandra Echeverría as Additional Voices (voice)

Kylie Hart as Additional Voices (voice)

JP Karliak as Additional Voices (voice)

John Kassir as Additional Voices (voice)

Scott Menville as Additional Voices (voice)

Scott Mosier as Additional voices (voice)

Laraine Newman as Additional Voices (voice)

Capri Oliver as Additional Voices (voice)

Arthur Ortiz as Additional Voices (voice)

Lucian Perez as Additional Voices (voice)

Maddix Robinson as Additional Voices (voice)

Ashley Silverman as Additional Voices (voice)

Fred Tatasciore as Additional Voices (voice)

Cory Walls as Additional Voices (voice)

Matthew Wood as Additional Voices (voice)