I would always stop and slowly walk away. Too many riders have crashed from dogs running into their wheels. The dogs would just bark until I got out of their territory.

But last year, I saw a large and small dog running down their lawn toward me. I stopped, straddling the bike, yelling NO. But the two dogs immediately split up and lunged for a leg, and I got nipped on both calves. The dogs did back off then.

So, no dog methods always work. Things I've personally seen work: Squirting with a water bottle, Blowing a loud rescue whistle, Yelling, Sprinting. I haven't seen anybody grab and use their pepper spray, yet.