Have you had german shepherds before?
I only ask because I had a bad experience with one once. We lived next door to a family with a german shepherd. Our kids played with theirs and we were back and forth between the yards/houses several times. What I'm trying to say is that we were not strangers to the german shepherd.
One time I was returning a cookie platter and went into their yard and stepped up onto their patio. The german shepherd was sitting by the sliding doors. He stood up and put his ears back, and bared his teeth while deeply growling. He also hunched like he was going to attack. I was literally stunned by this behavior. He had always been friendly before and I had approached their patio with him there before with no problems. I just stood there. The neighbor came outside at the growling and told me not to move. I didn't. She put him in the house. She said he had never done that before.
Ever since that day, I always called before going over. I also had her kids come to our yard, unless the dog was in.
I have another bad experience with a german shepherd too.
My daughters dog was attacked by a german shepherd. She had a small bichon. The dog required stitches and had a $400 vet bill. The owner apologized and paid for the vet bill. She said the dog never did that before, but promised to keep it tied up while out. One hot summer day, she admits to letting the dog off his leash so he could roam in the yard and get cooled down. They lived across the street in a rural area. That dog came to their yard and attacked viciously the little bichon. My daughter found him curled up in the garage amid a lot of blood. He had to have major surgery and cost well over 800 dollars. Again,, the lady paid and had the dog put down. It had never acted like that before. My daughters dog was friendly and loved to play, never had a mean bone in it's body.
So, since these 2 incidents I have never trusted german shepherds again.
I know others will write and say how their german shepherds are not like that, and I get it. Neither were these dogs, til they were.
Just my opinion and a heads up.