Good dogs get a "Hey buddy" or "Good boy". Bad dogs get a "NO!! NO!! GetthefrickhomeorIwillkillyouandeverythingyoulove!" followed by a lot of loud cussing in the hopes that the dogs owner will put down the Cheetos long enough to come out and get their dog out of the street before it gets hit by a car.
There are many dogs that I see often that make me happy. And there are some dogs that I have a complicated, pepper-spray flavored relationship with.