I have dealt with "Rage" before and what you described sounds more like dominance or rabies reaction than rage. Rage in Great Pyrenees is generally thought to be caused by a tumor in the brain causing something almost seizure-like with the aggression. when they come out of it they are disoriented and dont seem to realize that anything went on. in every other way a dog with rage is a normal, happy dog and acts like any other dog of the breed except during those moments of rage.
hope this helps some |