Well, at least in ancient Egypt, eating feces in your dream meant you were going to become wealthy. B. E. Shafer, ed., Religion in Ancient Egypt: Gods, Myths, and Personal Practice (Ithaca: Cornell University Press, 1991).

In Mesopotamia, dreams were usually matters of interpretation. Some advanced scribes who had enough training would go on to specialize in dream interpretation. I haven't spent much time with those texts, but (suffice it to say for an only mildly helpful answer), some thought they were a big deal and had a significant impact on the religion and politics of their time.

We could also readily consider Joseph from Genesis 37-50, who had several dreams which were then interpreted as being portentous about things to come involving him and his family. Similarly, we see Daniel interpreting dreams for Nebuchadnezzar in the book of Daniel.