Doesn’t need to be. Would you let a gang member in your yard if he wasnt acting aggressive? Dogs like that often turn on little kids in their owners family. Why on earth take a chance?
YOU stated that Ohhh,,so if theres an aggressive mastif next door, I should just *introduce myself*? And maybe he doesnt make his kid a prisoner inside the house because the neighbor wont control the curr.
Nowhere does the story backup that hypothesis. It is a very poorly written story that is short on facts and info.