I've heard it said that it would be difficult to find the bones of a dead bear in the woods of the lower 48 (United States).
So if you consider an elusive bigfoot population of say 2-3K with highly acute senses, intelligence and a burial "method/system" then the autopsied carcass is a long way off.
I'm not a believer but I find it interesting that many people from different regions and walks of life have spoken out. Also, I'm slowing becoming an outdoor enthusiast and it's amazing what you encounter in the great outdoors -- only considering the remoteness, the vastness and the dangerous elements (mother nature).
I've had to self-rescue in the woods from an injury that required 12 stitches. Might not sound like much but that and the many times I've felt fear from being "lost" has given me a new perspective on the outdoors.
Again thanks. : )