 Patton OswaltMax (voice) | Max (voice) |
 Kevin HartSnowball (voice) | Snowball (voice) |
 Eric StonestreetDuke (voice) | Duke (voice) |
 Jenny SlateGidget (voice) | Gidget (voice) |
 Tiffany HaddishDaisy (voice) | Daisy (voice) |
 Lake BellChloe (voice) | Chloe (voice) |
 Nick KrollSergei (voice) | Sergei (voice) |
 Dana CarveyPops (voice) | Pops (voice) |
 Ellie KemperKatie (voice) | Katie (voice) |
 Harrison FordRooster (voice) | Rooster (voice) |
 Chris RenaudNorman / Additional Voices (voice) | Norman / Additional Voices (voice) |
 Bobby MoynihanMel (voice) | Mel (voice) |
 Hannibal BuressBuddy (voice) | Buddy (voice) |
 Pete HolmesChuck (voice) | Chuck (voice) |
| HHenry LynchLiam (voice) | Liam (voice) |
 Tara StrongAdditional Voices (voice) | Additional Voices (voice) |
 Sean GiambroneCotton (voice) | Cotton (voice) |
 Meredith SalengerCat Lady (voice) | Cat Lady (voice) |
 Michael BeattieLead Wolfdog / Skinny Cat (voice) | Lead Wolfdog / Skinny Cat (voice) |
| KKiely RenaudMolly (voice) | Molly (voice) |
 Jessica DiCiccoPrincess / Tiny (voice) | Princess / Tiny (voice) |
 Garth JenningsHamster (voice) | Hamster (voice) |
 David AcordAdditional Voices (voice) | Additional Voices (voice) |
 Jaime CamilAdditional Voices (voice) | Additional Voices (voice) |
 Antonio Raul GarciaAdditional Voices (voice) | Additional Voices (voice) |
 Brian T. DelaneyAdditional Voices (voice) | Additional Voices (voice) |
 Terri DouglasAdditional Voices (voice) | Additional Voices (voice) |
 Sandra EcheverríaAdditional Voices (voice) | Additional Voices (voice) |
 Kylie HartAdditional Voices (voice) | Additional Voices (voice) |
 JP KarliakAdditional Voices (voice) | Additional Voices (voice) |
