To dream of squirrels running around implies that an association you have with a significant other or a financial endeavor isn't giving you success or emotional fulfillment. Squirrels also symbolize collecting or accumulating something. Perhaps you should be collecting something. It may also mean that you are accumulating too much of something and you should get rid of it.
To dream that you are trying to run over squirrels with a lawn mower implies that you want to fit in with others. You believe that they will approve of you if you share the same opinions or perceptions.
To dream that you are feeding a squirrel indicates that you will receive satisfaction by using determination and persistence.
To see squirrels in a tree suggests that you may be the victim of a humiliating experience.