Or he was just uncomfortable by those dogs or those dogs in that particular setting. Often they growl when they are feeling vulnerable. If he's well-socialized & hasn't done this before, I would not worry about it as he could have felt threatened for some reason or felt you were threatened - but if he keeps it up, I would tell him "no" when he does it & get away from any big dogs as this can cause an attack. Then, just keep socializing him & correcting him when he growls. If he's persistent, you might hold your hand over his eyes or something else he doesn't like to discourage the growling.
__________________  Jeanie and Tibbe One must do the best one can. You may get some marks for a very imperfect answer: you will certainly get none for leaving the question alone. C. S. Lewis |