Dog dosent have to be scared. lol id gladly stab a dog if it was going to bite me. and the owner too if they posed a threat.
Most medium or bigger dogs can fuck you up. pits, bull terriers, fuck chinese char pei isint big but they could seriously hurt you (they do make good pets tho).
with how some of these assholes take care of their dogs, i wouldnt take chances on a secluded bike path. not sayin id harm a friendly dog thats coming up obviously to meet me, i worry about the obviously agressive dogs.
its wierd tho. the two biggest dogs in the world (irish wolfhounds and great danes) are the most tame of all dogs. they look scarry cause thier size but are so sweet. id let any random great dane near me. i trust them 100%. but medium sized dogs are really owner dependant. and if the owners a fuck up, 99% of the time, so is the dog