For a REALLY interesting story, go here:
www.bigfootencounters.com
then, click on the link on the left side of the page for "Bigfoot creatures", then, on the page that opens, click on "The story of Zana", which is the last link on the page. It's a fascinating tale, and includes some pictures of a skull from Abkhazia, from a man claimed to be the result of a mating by a human male and a female bigfoot-like creature. The skull looks very similar to a Neanderthal skull, but the man died sometime in the 20th century.
I might add that, according to the aforementioned story, the four surviving children of this creature all married humans and produced live, healthy offspring. It is taken as a dictum among zoologists that if two individuals can mate, and produce viable offspring that also may mate successfully, then those two individuals are of the same species, no matter how divergent their appearances may be. This brings up the intriguing possibility that bigfeet may be just humans whose ontogeny reflects a simple genetic recessive preserved by inbreeding.