Elenco - As Vozes
Ryan Reynolds
Jerry Hickfang / Mr. Whiskers (voice) / Bosco (voice) / Deer (voice) / Bunny Monkey (voice)Gemma Arterton
FionaAnna Kendrick
LisaJacki Weaver
Dr. WarrenElla Smith
AlisonPaul Chahidi
Dennis KowalskiStanley Townsend
Sheriff WeinbacherAdi Shankar
JohnSam Spruell
DaveValerie Koch
Jerry's MotherGulliver McGrath
Jerry (12 years old)Paul Brightwell
Jerry's StepfatherAlessa Kordeck
SherylMichael Pink
JesusRicardia Bramley
Sheila HammerAlex Tondowski
Tom