There was a declared BF researcher and general wooist writing on a skeptic board a few years back who was of a mind that BF is a transdimensional being capable of d-jumping any time. So try running over or shooting something that can just choose not to be there if it so prefers, you skepheads!
He also claimed that pareidolia doesn't exists as such -- the faces and forms were really there when you looked and gone back to another dimension the next moment -- and that socks vanishing from washing machines were evidence of his "theory", so I'm not quite sure if he was genuine or trying to get a rise out of the board members.
Also, researchers claim the gubmint is covering up the existance of BF to protect the timber industry. If BF were proved to exist, it would be instantly declared an endangered species. Just imagine how much timber land would be put off limits to logging.
Captured BF's were used to help build the sets for the fake moon landings.