There are two possible angles why fossilized bones or even a body of a bigfoot has never been unearthed or discovered. The first reason is attributed to the hoax theory. Most of the bigfoot sightings have been dismissed outright as a hoax perpetrated by people who want to get financial or practical gain. The second reason can be the purportedly elusive nature of bigfoot. The documented sightings that include the Patterson-Gimlin film shows q bigfoot to be a very mobile creature with a speed of movement that is above that of a human. It also seems to prefer isolation and being hidden. In fact, Patterson in his interviews indicated that his group was only able to take a short film of the creature because of the element of surprise-they came upon it while they were rounding an overturned huge tree trunk. There are uncovered fossilized remains of the ancient and extinct giant ape, Gigantopithecus, said to be a precursor of Bigfoot, discoved in 1935 that some experts point out as proof of the existence of the legendary animal.