Daymares/daydreams are very much like nightmares/dreams only more under your control. If the thoughts were mine, I'd look to see what I was afraid of or trying to do "worst case scenario" about.

Strangers are just that, strangers -- and I'd be scared, picking up a hitchhiker, because you don't know what they're going to do, especially with all the stories (the one down in Florida right now) where they rob or kill the people giving them a ride. If it were my dream I'd be thinking I'd "kill" him before he hurt me and my boyfriend. It wouldn't bother me too much that I'm thinking it now instead of then because now I'm truly "safe" from him and it's safe for me to realize how worried/scared I was whereas at the time I didn't think I was. Or, now there could be a situation "similar" to how I perceived the hitchhiker one and, like with dreams, I'm using imagry to help me "get it" in a way that is "safer" for me to see.

The puppies I'd think about whether I've gotten angry or been afraid someone was that angry with me, etc. Treat the daydreams like you would a night one and analyze what's going on around you a bit and/or change the outcome -- keep imagining and save the puppies, disarm the hitchhiker, etc. Look at what's happening with a "what's the message?" eye instead of just thinking "eww, grusome" and turning away, worried about the dream itself. The images/thoughts won't hurt you but they are trying to tell you something that only you can "decode."