I just finished the 1st video and I find it a little bothersome that David or George really don't speculate on what it could be or go into possible theories. With all the strange evidence, I would think David would have some sort of theory since he's worked with the info for so many years. I know he says that a true investigator doesn't make theories, but personally he has to an inkling. Obviously he's a sasquatch-tard.

Personally I'd guess some sort of large bird since some of the bodies were found at a higher altitude that was unable to be reached by average people. Also the evidence of people dropped in the middle of cornfields or pigpens, surrounded by mud but yet they were clean. And the story of the woman who was "launched" over a waterfall, brain matter splattered on boulders below and then body taken to a different location a few hundred yards away where it was eventually discovered. It seems plausible that it was an animal either known or yet unknown,as we find new species all the time. There are all the legends of the thunderbird, the mothman, ect.

David mentions that sometimes there is very little left of the person, maybe bone fragments or teeth. Owls and other birds of prey are known to swallow their kill whole and then reguritate the undigestable parts. That would somewhat explain the very small pieces perhaps?