Dream about killing an attacking dog refers to your fearlessness in fighting off your opponents, while maintaining your ethics and rights. You are not making any progress in life. Perhaps someone does not know how to mind their business. Your dream is a message for fears of losing control of yourself or losing your position or status in life. You are numb from fear.
Killing an attacking dog dream expresses conflict between yourself and the society you live in. You may just not be feeling any chemistry or passion in your relationship. You tend to keep your feelings inside and need to find a productive way to express them before it grows out of control. It is a message for regret over some stinging remarks and hurtful words that you said. Someone is questioning your character and harming your reputation.
If you dreamt about killing an attacking dog:
This is a day where the quest for romance could be a little hard going. Others seem keen enough to talk, and may offer a lot of information, but only up to a point. After this you can sense a barrier beyond which you will not be allowed to journey unless you pass some subtle test, devised by them, to stop certain people from ever hurting them again.