I noticed that all the untrained dogs looked nervous (lip licking, submissively holding their bodies low). Even in the head shots before the "attack".
Those untrained dogs won't protect anything. I think that the statement, "A non trained do will not protect you" is a very general statement.
Another interesting thing . . . the "trained" dogs are all males, the "untrained" dogs all female (I think, judging by names).
Until we meet again . . .
Bear(rescue)-GSD, my soul mate.
Kai-(rescue)GSD, my forever baby.
Kobie-Pomeranian, my tiniest dog with the biggest heart.