one theory is that if u have a falling dream and u hit the ground (in the dream) then u die
like... your body knew it was gunna die sorta thing? so it has a dream that it's falling etc etc.
neways, i use to have this big dog that lived nxt door to me, when i was little, and i was BEYOND scare of it, it terrified me. neways i used to have this dream that i could hear something scratching at my window, and i go to look and it's the dog, and it comes in through my window and lies down on my bed
this was years ago mind... i dont often have dreams i can remember nemore!
i believe that dreams can tell us somethings about ourselves that are below our conscious level. like for example, that dream i had about the dog could have been telling me that the dog was actually nice and i had no reason to be scared of it, and i knew it subconciously but i didnt/couldnt/didnt want to bring it into my consoius. if that makes sense to anyone... i'll stop babbling now