A dream featuring an animals tail implies that something you have been working on or something in your life is coming to an end, or you are trying to find balance in some aspect of your life. It may also imply that you are facing some difficulty or something is taking longer than expected. It may also be a symbol of sexual desires or stimulation.
To see a wagging tail in the dream suggests that you will experience or are experiencing excitement, joy or pleasure.
If you pick up a tail of an animal or cut it off then it implies that you are using intuition and wisdom in some part of your life.