Hamster 
To dream of more than one hamster indicates a time of bustling activity, family outings and/or small celebrations. To dream of a hamster running on an exercise wheel implies that you may, quite literally, need to go for a regular walk or run. To dream of a singular hamster may be suggesting that a gift of food or a parcel of groceries could mean a lot to someone you know.
Gerbil
Seeing a gerbil in your dream represents joy and satisfaction from little things in life.
Alternatively, it may mean that you are seeking for a new relationship or companionship.
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.
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