Major is 90# male about to turn one. He is full of energy and has never shown aggression toward anyone. He'll play endlessly with any person or dog he is familiar with. In short, he just acts like a very large puppy. He does bark when someone comes to the door. But, so does the chihuahua. My concern is he is quite scared of anything or anyone he isn't familiar with. Every person or animal we meet outside of the house terrifies him. He is also scared of some inanimate objects. So much so that we have to give every storm drain a wide birth on walks. Is this normal for a GSD?