Rats keep a close relation to sickness and death. In Egypt and China they embodied the evil deity of plague. Dreaming of rats is not exactly pleasant, as they symbolize degenerative passions that are consuming you, such as rancor, jealousy, hatred, avarice, etc. It deals with those thoughts and feelings that you hide or reject, but that you have inside. If in the dream you are aggressive towards the rat it is a sign that you have the capacity to dominate the situation. However, the dream could also reference a certain attitude of the dreamer: you may be behaving like a sewer rat in real life, and your subconscious is reproaching you. Some superstitions believe that rats have human souls. Generally, their actions should be observed in dreams, and corrected if they are found in your behavior.
Gallery of dreams
Do animals dream?
Research conducted by various scientists show that animals do experience dream while sleeping. They also experience similar sleep stages like human beings - REM and Non-REM. If you have noticed a dog sleep, it might sometimes wag its tail, this indicates some response to its dream. A study was conducted in a cat by removing a part of the brain stem, which will not prevent it from reacting to the dream during REM. It was noted in some cats they were aggressively chasing mice as in reality.
Some people can recognize dreams while sleeping; this type of dream is called lucid dreaming. Most of the people would have experienced this type of dream atleast once in their life. You can actually control these dreams. One of the popular dreams that most of us experience is as flying in the sky; you can try lucid dream by imagining your house beside the flying aid.