- Bailey: [trailer only] I had a purpose, I was needed again and again and again. With each new life I was learning a new lesson.
- [last lines]
- Bailey: So, in all my lives as a dog, here's what I've learned. Have fun, obviously. Whenever possible, find someone to save, and save them. Lick the ones you love. Don't get all sad-faced about what happened and scrunchy-faced about what could. Just be here now.
- Adult Ethan: [throws the flattened football] Go! Okay, go get it.
- Bailey: Be - here - now. That's a dog's purpose.
- [first lines]
- Bailey: [narrating] What is the meaning of life? Are we here for a reason? Is there a point to any of this?
- [a litter of puppies]
- Bailey: First, I had no idea what was going on. I... I couldn't see a thing. It was warm. There was my mother. Every day, I had fun. Was having fun the point? The whole point? No, it couldn't be that simple.
- Dog Catcher: Here's one...
- Bailey: And then it was over.
- Dog Catcher: That's it for you.
- [put him into his truck]
- Bailey: No more fun. It seemed like such a short life. I mean, what exactly did I do? There was some playing. There was some eating. I dug in the dirt. But when I really thought about it, it didn't add up to much. I was back. And I was a puppy again. Alive and ready to ask the big questions. To dig for answers.
- Bailey: [about Hannah] From that moment on, the girl was a member of our pack. I liked her. Plus she smelled like biscuits.
- Adult Ethan: I'm really stubborn.
- Adult Hannah: I know that. When you put your mind to something, that was that.
- Adult Ethan: Yeah. That's good for getting things done. It's not so good for relationships.
- Victor: [jeeringly at Buddy who is chained up outside] I always told her you'd get this big. Look at what she thinks of you now.
- [Ethan realizes that it is Bailey]
- Adult Ethan: No.
- Bailey: Yes, it's me, Ethan, it's me.
- Adult Ethan: Bailey?
- [Bailey grabs his tail to indicate that it is him. Ethan smiles]
- Adult Ethan: Bailey.
- Bailey: [after Ethan has banished his father from the house] From that moment on, Ethan was the leader of our pack. When we went home, things were different. Dad was gone.
- [Ethan and his mother are burying their dead cat below Bailey's window]
- Bailey: That cat had been hiding from me for a while. And now I got it.
- [thinking they were playing hide and seek, he digs up the cat's body and takes it into the house]
- Bailey: I found him!
- [Elizabeth screams in horror]
- Bailey: Okay, sorry.
- [he takes the corpse back outside]
- Ethan's Mom: [grossed out] Geez!