When I was young I had a paper route and a sting ray bike . I liked it because the butterfly handlebars seemed to work well with tossing the papers. There were a couple of dogs on my route that could easily catch me and nip at my ankles as I tried to pedal away. I never got bit badly but it used to really piss me off and I hated those dogs. As I look back I should have directed my frustration at the dog owners. I had been successful at kicking the poor animals in the jaw but they still came after me. I guess I was lucky I was never seriously injured by the dogs or crashing trying to fight them off. I am pretty sure bear spray would work and I probably would have used it on the dogs that chased me because every day they would come after me and I was so scared but I still did the route.