I have a pet theory about Sasquatch. My personal hunch is that most (maybe all) Sasquatch sightings are actually encounters with men who, for whatever reason, have taken to the woods. You live in the great outdoors for a year or two, things happen. You stop shaving your face or cutting your hair. Your Polar Fleece jacket finally disintegrates, so you don a makeshift poncho made from a bear skin. Your boots fall apart, so you go barefoot.
Sound unlikely? The truth is, there are many documented cases throughout history of people who have abandoned society to live in the woods. And guess what? The sort of person who moves to the forest to live alone among the animals is also not the sort of person who will react kindly to encountering other humans.