Quote Originally Posted by K9soul
I think there can be a difference between "provoked" and "triggered." I think it's more accurate to say there is always a trigger, but whether that is something that is within the dog and not identifiable, i.e. neurologic disorder perhaps, or just prey drive suddenly kicking in, is not always apparent to us. Provoked I think more along the lines of a person is doing something directly to the dog that causes it to react by attacking.
Well said, yes a reason there. Hannah(our RB German Shepherd) attacked for what seemed like no reason we then found out she was grieving the death of Simon(our other RB German Shepherd). It may seem like it was "no reason" but mentally there was.