"...chase me on my bike for blocks..."

When I was still working, I used to ride a bike for exercise (and in order to pass the annual pedal and puke test). Dogs started chasing me, so I put some clips on top of my handlebars and clipped an old wooden baton in them. Rolled more than one yapping nipping canine with it. Of course, in CA at least, a police baton in possion of a non-LEO is a felony. But an aluminum (or wood) baseball bat, that is a horse of another color. And the dog still rolls...