My boy, Hans, does this when our old dog, Sophie, gets on to him for something. He is ten times bigger, but submits to her at times.
This is terrifying behavior. Your puppy didn't realize the bigger dog was leashed and that his human would (presumably) stop him. Sasha acted exactly right. It has nothing to do with a fear stage, except that repeats of this sort of scenario COULD make Sasha afraid of other dogs.Quote:
then her dog lunged foward towards us