I was faced with this situation once a couple of years ago. There are wild dogs on the land that we hunt so I usually carry a pistol. Anyway, I locked my key in my truck about 2 miles back in a cutdown. So I start the hike out. When I get to the road about 5 dogs come out of this guys yard and they are all barking and snarling. They meant buisness, luckily I gave a warning shot into the ditch bank with my Sig .40 and they scattered. If they had kept coming I am not sure what I would have done, but I hope that I would have been able to take a couple out before they attacked me.