I've never had a good outcome from trying to get law enforcement or animal control to deal with a dog. I generally get the answer that they can't do anything until it actually bites someone.
I've heard that a shot of lemon juice in the face generally chases them off, but haven't tested that. I've been meaning to get some fresh pepper spray for a long time, but every grocery store sells those plastic squeezy lemon juices.
So far I've been able to out-alpha every dog I've come across. I just get big, aggressive, and bark right back at them. Some day maybe that won't be enough, but it's worked so far. It helps that I'm not exactly roaming the toughest streets in town.
Any response beyond that would probably end up causing more trouble for me than it's worth. Unfortunately, I've pretty much had to adopt a "wait until they bite" approach too.
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