All of the above, including this:
When being chased by a dog, I intentionally only go fast enough for them to barely keep up with me. I make it a contest to see how far from their house I can get them to chase me. Probably the only exercise the dog (and the owner) will get all week. It cracks me up when I hear the owners yelling at the dog to stop, too. Like the dog is all of a sudden trained and will listen? LOL. They deserve to go chase after scruffy.