Do you believe there are creatures on the planet yet to be identified?
There is a species of bacteria that live in the oceans. It is called Prochlorococcus.
It is kinda small.
It wasn’t even discovered until about 1968.
Which is odd, because by most estimates, it is by far the most numerous living thing on planet Earth.
Now I would admit the odds seem against bigfoot. Even if they find no bones, by now you would thing they might have found a tooth.
But I’ve seen motion adjusted computer enhanced copies of the Patterson film and I can say two things: It is OBVIOUSLY a female creature and there is NO WAY it could be a human in a suit.
Who knows? You night be talking population density figures that are so low they are borderline-extinct. Three or four individuals per hundred square miles... who knows?
http://genome.jgi-psf.org/prom9/prom9.home.html
http://www.sciencefriday.com/program/archives/200806132
http://www.npr.org/templates/story/story.php?storyId=91448837
http://www.google.com/search?q=Prochlorococcus