I think it's worth noting the time component here. When we talk about discovery of other unknown species, we're talking about a thing which has already happened. When we talk about sasquatch, we're talking about something which has yet to happen. Comparing the current state of each is an apples to oranges comparison. If we look back at past discoveries of unknown species during the time when they were suspected but unproven we have a closer analog to the sasquatch situation today. That still doesn't account for the cultural myth component of the picture. I can't think of another unproven species which was so deeply and broadly ingrained in our cultural mythos prior to official discovery as sasquatch is today. The picture, with context included, seems unique. However, ignoring the evidence which DOES exist merely because the big picture is unique is a major mistake. Evidence is evidence. I agree with LCB ... the evidence warrants broader and more serious attention than it has gotten from the very people who should be most interested.
MIB
PS: That still doesn't make bigfoot a bear.