Decay
To dream of something decaying represents an area of your life that is experiencing slow degradation or failure. Positively, it may reflect slow growth or improvement as negativity goes away. Negatively, it may reflect confidence or vitality that is slowly being lost.
Example: A woman dreamed seeing dead horse bodies decaying and decomposing. In waking waking life she desperately needed a job for new opportunities as she was experiencing current possibilities slowly becoming more difficult or impossible day by day.