It depends on the owner and how the dog has been trained. My old Shepard, was a lover not a fighter. Would he protect me and the kids, maybe. He was actively encouraged not to be aggressive.
Most aggressive dogs I have ever met are the Lap Dogs. These breeds were breed as Ratters. It takes one mean ass fuck of a dog to attack and kill a rat.
The Residents Labradors are trained to protect and serve. They will not move until I say release. Now does that make them aggressive or me?
Ronnio, you definitely need to get out more.