Something walking upright in Lamoille County, Vermont

The sighting was today (8/6/19) at 10:15 am at our VT summer cabin. I am 67, retired RN & former private pilot with excellent vision- 20/15, so I was not mistaken. It was not a bear. We have had a bear here by the deck, so I know what bears look like standing up to the reach feeder. It was sunny day. My small Chihuahua mix was out front in her cage. She was barking so I walked out to front deck and looked towards dirt road where she was looking. We sit back approx.125ft from the road. I saw a very black humanoid shape walking on two legs go past our driveway. It was half bent over then straightened up. It had longs arms swinging. The head was turned away & appeared to have very short neck & roundish head from that angle. I said to myself, "That looks like a chimp!". I watched for it for approx.12 seconds until it disappeared behind trees going east on road. There are spots that I can see thru the trees to the neighbors drive, so I was looking for it to either go up the drive or continue on road. When it did not, I walked out to end of drive, approx. 200 ft. ( w/ my air horn). There was nothing on the road for some distance. Later in day I went out to that area with my small dog. She refused to even walk and was trembling. This is the same dog that almost went thru a screen door to attack the bear by our feeder a few weeks ago. I noticed an area of bent weeds that would have been where the creature had exited our woods, going into a small ditch then back up to get onto road before walking past our drive. On the roadside, in the direction I saw it going, there were 3 barefoot heel depressions w/ faint toe marks approx. 12 inches long. The area was dry with fine gravel so not a clear print. The week before, I had heard twigs snapping & weeds moving behind my fenced garden. This approx. 40 ft from the front porch where I often sit. The dog barked. The noise stopped then started again, so I fired off my air horn which I always have near after an encouter with a large coy-wolf. The cabin sits about 100ft above the N. Branch Lamoille River. There are many snowmobile & ATV trails plus the Long Trail is only 1/5 miles. It was very wooded and remote. A few homes and camps on our road.