When I walk mine, I use 25' Reel Leash on each, and frequently have to pull them in short, when we encounter others Human/Dogs. Both of mine are rather "aggressive", and I frequently just retreat up someone's sidewalk, to let whoever pass, then we move on.
However, I would be more likely to just pick them up in my arms, rather than carry something extra to deter some other Dog. That's never happened though, it's usually the other way around.
__________________ Dogs know that you love them, weather you own them or not 
Mbrs of YT Teapot Club: SNEAKERS since Apr 2011, Ichabod SOON ! RIP my darling Becca. |