A dog finds the meaning of his own existence through the lives of the humans he meets.
Marg Helgenberger
as Hannah Montgomery
Betty Gilpin
as Gloria Mitchell
헨리
as Trent
Kathryn Prescott
as Clarity June "CJ" Mitchell
Dennis Quaid
as Ethan Montgomery
Josh Gad
as Bailey / Molly / Big Dog / Max (voice)
Abby Ryder Fortson
as Young CJ
Emma Volk
as Toddler CJ
Ian Chen
as Young Trent
Jake Manley
as Shane
Johnny Galecki
as Henry Montgomery
Tyler Asher Xin-Qin
as Saint
