These observations are two things I've noticed about Bigfoot reports that don't seem to be emphasized elsewhere.
Bigfoots have a tendency to plait the hair of horses. A somewhat similar tendency is noted among European Otherworldly Fairy beings. Is there a connection? If so, what is it?
The second one is the Bigfoot tendency to whistle. Do they actually communicate by whistling. When the Canary Islands were first discovered by Europeans, the inhabitants, apart from speaking the Guanche language, had developed a whistling language, Silbo. It is still whistled there, but I think it is now based on Spanish, the Guanche language being extinct. Could the Hairy Ones have a whistling language?
Another thing I've noticed: Bigfeet and Russian wildmen seem to have a singular aversion to dogs. Why this should have developed I cannot say. The current thinking seems to be that dogs are not directly descended from wolves, but are a related animal and have interbred with them. The indications seem to be that dogs were domesticated in hunter-gatherer times. Were they a significant defense against attacks by wildmen? Any answer to the enmity between wildman and dog can at this stage only be speculative.