Every male dog I've ever owned has been super friendly with strangers and every female dog I've ever owned has been highly suspicious of strangers, regardless of breed. Anyone else notice this pattern with dogs they've owned? In fact the sire of one of our German Shepherds was so indiscriminately friendly that someone stole him. Her mother, however, was so aggressive with strangers that she had to be locked away when strangers came to the breeder's house.
You are right, almost every dog I have owned was a female. they are extremely protective of the Home and family. That being said I have had no trouble training them and seem to connect better with the female dogs. The worst one I had was a male, he just had too much energy when the sun came up he was ready to start the day and being a house dog he made sure I was up with the sun. I sure miss him.
