bigfoot sighting?

[ZenGum]

If that is bigfoot ... why is it walking on all fours??? Everyone knows bigfoot is bipedal. What, is it doing yoga or something? As far as I know, the only bigfoots that do yoga are in California.

Seriously, if there were bigfoots we'd have found some serious evidence by now - a carcass, some bones, shoot one, something. What I find interesting is the widespread prevalence of this sort of crypto-creature. Big-foot, Yeti, and even Austalia has a Yowie, which is much the same... an elusive, bipedal, very tall, hairy humanoid, only glimpsed at night in remote bushlands... I wonder if there is, in the collective unconscious, some primitive nightmare based on Neanderthals or such, that emerges in the minds of people who fall into a semi-sleep state while out late at night alone in the woods...

EDIT: FTR, I voted: I doubt it, because proving something doesn't exist is very hard. I very strongly doubt it. But it isn't absolutely impossible, some yet to be discovered large mammal species roaming a heavily populated continent...