We have a German Shepherd our neighbor across the street has a beautiful mix next door neighbor has five dogs, four little yappers and one big black lap. There are also a couple more blue heelers on our block and I believe a pitbull. There was a lovely Rottweiler but she passed recently.

Our GSD will get in between us and any perceived threat instinctively she's awesome, most of the time it's only the mailman, she likes the ups guy lol.