Rats 
To dream of rats symbolizes the presence of extremely disagreeable or distasteful thoughts.
Alternatively, it signifies feelings of uncertainty, guilt, envy, or other repressed emotions that are eating at you. It may also stand for someone who personifies the characteristics of a 'rat.'
A black rat represents secrecy and deceptive acts.
A white rate is an omen that you will receive help from am unexpected source in your time of trouble and distress.
To dream that a rat is biting your feet portrays your daily life as a 'rat race.' You have a preoccupation with your ever busy waking life.
Rattle
To dream of a baby playing with a rattle symbolizes peace and quiet in the family.
To dream you give a rattle to a baby augurs of an investment gone bad.
Ration
To dream of a ration represents a desire for fairness and diplomacy in a time of stress.
Rattlesnake
To dream of a rattlesnake symbolizes your life journey and the passage of time.
Lemmings
To dream of lemmings indicates a discomfort with repeating patterns. The same problem may be happening over and over to you or a friend.
A dream of lemmings may also indicate a distrust of authority. New leadership or a new direction may be needed to escape a path of unhappiness.
- 1