To dream that you see fangs means that you are feeling scared about something in your life. There is a chance that something has happened in the past that doesnt give you a peace of your mind. The fangs could also denote to the fear of the future and unknown situations.
Dream dictionary: Fangs dream meanings
If you dream about the fangs, then such dream indicates the offensive things you have said to others.
To see a madstone applied to a wound from the fangs of some mad animal, denotes that you will endeavor, to the limits of your energy, to shield self from the machinations of enemies, which will soon envelop you with the pall of dishonorable defeat.