The critical fear period for AussieDoodles is 8-10 weeks. During this time, if they don’t have a positive experience with something, they may develop a permanent fear of that thing for life. They may fear things they have not seen before, such as people wearing hats, tall people, short people, people of different races, crowds, cars, streets, or ANY object or thing they haven’t seen before. If the puppy perceives this thing as dangerous now, it will ALWAYS perceive it as dangerous. If the puppy perceives this thing as SAFE now, it will ALWAYS perceive it as SAFE, and won’t be afraid of it, ever.