Lazy dog owner is a fat (shocking) I live outside city limits in the woods (no leash laws on the forest service roads). My dog has great recall off leash but I never trust an unknown dog. Most dog owners in the area frequent the forest roads near my house because it allows friendly dogs to run free & get the exercise they need.  I’m walking along with my dog (off leash) and I see a van on an intersecting road ahead. This makes me uneasy since most people walk the roads & this was parked in the middle of the road, not moving.  I call my dog over & put him on a leash to be safe. Especially if it’s someone out doing target practice, I want to make sure he doesn’t interrupt. As we approach the car, I see a dog behind it. His fur is raised along his back & it’s tied up to one of those super long “yard” leashes. The van suddenly turns on it’s engine and speeds down the road - the dog follows.  My first reaction was - well that’s ridiculously dangerous. What if the leash got tangled in the car somehow or in a wheel?! My second reaction was - I bet that owner is fat.  So I continue down the road and of course - run into the van again. Parked mid-road with the dog just standing behind it. My dog was on the leash still since I had no idea if this dog was friendly. I approached the van but this time the driver did not seem to notice me. Due to rain, the areas around the road were complete DEEP mud. I tried to remain calm as to not alert my dog but again, NO clue if the dog is friendly. Had I not been on a lunch break, I could’ve taken a longer route back instead.  I snapped a picture of the license plate as I approached in case anything went terribly wrong with the dogs & I needed the info. As I pass by the open driver’s side window, I calmly said “excuse me, I’m approaching your car with my dog. Can you make sure your dog is ...” I was cut off by of course a FAAAAT, grotesque thing - she opened the door almost into my face and started shouting, “SHE’S NOT FRIENDLY GET BACK” First of all, both dogs and myself are now startled, her dog is clearly showing anxiety and uncertainty (but not aggression) , and my dog and I just want to leave.  I said (again calmly), if your dog isn’t friendly, she shouldn’t be out of your sight, on a long leash. I then continued walking away to remove my dog from the situation.  I wish I would’ve sounded more bad ass or mean but she chose to just put her dog in the car, make a 7 point turn in the mud, and drive away.  I was mostly relieved there was no aggressive interaction between the dogs & that at least her dog got to be outside.  Of course the fat owner is lazy & irresponsible, but you all knew that from the beginning :) is there anything that they DON’T ruin?!!!