I just noticed while spawning dragons in some towns like Riverwood, Whiterun, Morthal that dragons NEVER attack civilians, and attack ONLY the people hostile to them (like guards, your followers, you...).
I mean really, they are supposed to be merciless and arrogant not someone who cares about others.
So I'm wondering is there a mod which makes dragons attack EVERYONE in town, civilians, childrens, animals...it.