I have some neighbors who spend a lot of time in their front yard with their small dog, who loves to come out and chase me when I'm out for a run. It's not aggressive, but does tend to get my dogs (who are on leashes) all worked up. They always come running to catch the dog when it happens, but stopping to let them catch it got old pretty quickly so I just keep on running and the dog keeps on following. It's become a game to see how far I can get these people to run down the street along with me before they catch their little floor mop dog. Three blocks is my best so far.