I come across unleashed dogs fairly often. It's not like there is a lack of places to take your dog where that's allowed, but people do it anyway.

Quechee is a pretty big tourism hot spot this time of year. I was at the campground this weekend and there were a lot of people. One of my neighbors was flying a drone over our campsites while I sipped my coffee at like 9am. Sounded like a swarm of angry bees. Another neighbor was playing their music loudly enough for everyone to hear for hours. Tourists aren't always the most considerate people. Not out of malice necessarily, but they can act a little clueless sometimes.

All that aside, there are a few places in the state where you can hike that don't allow dogs at all. Look for places that are wildlife conservation areas.