a few things here.
neighbors walking around with two pitbulls, granted, it's early morning, but I walk my kids to school and sometimes she's not early enough (lady with pitbulls takes a late walk), putting school kids in danger should either dog get loose, not uncommon for people to own multiple dogs. if both get loose, it's game over. dude blowing smoke in a dogs face has more to due with darwins law than anything, just something I've witnessed. "Knowing if a dog is friendly", I was a field worker, we visit strangers all day long. if the owner of the house says a dog is friendly, I dont believe them and proceed with caution anyhow, owners would walk us through their property, and *assuming* that was good enough was a big mistake. I didnt get bit because there was only one dog and it simply rushed at him full speed as soon as the owner opened the door. No way to get around a full speed dog, it's like a sucker punch, there's no way to defend yourself.