"Not very friendly dogs" don't get very far with me. I was riding in the country on my bike in May of '10 when I had a very large aggressive Lab puncture my calf. I smacked him around and he released me.
The next week I bought a law enforcement formula peper spray called FOX. Extrememly effective against two and four legged animals.
I bought the party-size canister with the pistol grip and safety pin in the trigger mechanism. It fits in the water bottle holder on my bike with a thin piece of foam wrapped around it. I also carry it on all walks that I go on with or without Lisl.
To many irresponsible dog owners for me to take any more chances and being unprepared.
Bear, Anna, Molly, Ossie, and The Countess Lisl von Schlaf