So I've been thinking a lot about shape-shifters and entities who are able to function in global society without being detected. Is it possible for such beings to have evolved biologically? I know of a species of octopus which mimics other animals; is it possible that a large land animal could've evolved a similar ability? They would have to be highly intelligent to have gone on for so long without being detected. They may even control certain parts of the legal system in portions of the world. Does anybody have any evidence of this?
No.