You Handled this situation,Quite Well,For you are here to tell us about it!Speaking for myself in this Scenario-I would have Drawn my weapon,& If the dogs moved in on me,I would have shot the closest one.I normally pack,when hiking,& my 1st and 2nd Round's are usually Rat shot or Glasers.You had a bunch of eye-witnesses,behind you,Vegans or Omnivores,they trusted you to guide them,I think they would back you up regardless!Good Job Sheriff!