Somehow this creature has eluded all attempts at definitive detection. There are numerous anecdotal sightings, questionable films and photographs, large footprints, casts of large footprints and other alleged evidence attesting to the existence of this extraordinary beast.
Extraordinary claims demand extraordinary evidence, and the burden of proof is on the claimant.
Those who believe in Bigfoot have not met their burden of proof. It is highly unlikely that a creature of this size could have eluded detection for this long in an area as well studied as the Pacific Northwest. No authentic bodies or body parts have been found. No unambiguous films or photographs have been taken. Footprints and casts said to be authentic tracks have proven on closer examination to be elaborate forgeries.