Quote Originally Posted by MartianDestiny View Post
Stop, put your bike between you and the dog (and be prepared to use it as a weapon if necessary), square off your shoulders and "get big", and yell (anything "go home", "no", "bad dog", etc), maybe take a step or two towards them. Most will run back home before you get to the end of that sequence.
When I was in South Africa a few years ago, I was doing a marathon training run in a nature park. A co-worker was with me - riding a bike. This was the technique he used when we were both attacked by an ostrich. He used his bike as a shield and weapon and it worked. Of course, the ostrich decided to leave him alone and attack me but that's a different thread.