A dream of a rat suggests that someone you know is jealous of you and what you have accomplished; this person is likely to be working against you in some way. The dream rat also symbolizes the fact that you are likely to be deceived and harmed by your neighbors or that you will quarrel with your friends. When a rat appears in a dream, it is almost always a negative sign and is linked to doubt, guilt, envy, repulsion, and depravity. Dreams of black or brown rats suggest future illness or treachery.
However, if you kill a rat in your dream, it means you will win a victory in a contest, and to dream of a white rat, which is very rare, is an indication that you will have the support of unknown protectors. To catch rats in a dream means that you will overcome the scorn of colleagues and win out over your enemies. If you are chasing and catching rats in your dream, it is a sign that you tend to criticize what you see as a lack of moral values in those around you.
A dream of a rat may indicate negative influences and feelings that are “gnawing” at you and harming your overall sense of well-being. Dreams of rats can also be expressions of a fear that you will end up destitute and friendless or that you feel your security is being “eaten away.”
The dream rat can represent someone you know in your waking life – someone who has “acted like a rat” and betrayed you. A dream rat may be telling you that you should become more aware of the negative forces in your life. It maybe bringing up images of danger, poverty, and illness in order to make you define and acknowledge the things that are making you anxious.