The Yellowstone National Park in Wyoming has been a sanctuary for many creatures. It is where they are free to roam and live, as they should in the wild.

You can spend countless hours hiking at the park to soak in the beauty of nature, have great adventures and interesting experiences, and perhaps even witness something extraordinary.

Because of its diverse ecosystem, the park takes pride in being home to varied threatened and endangered species of reptiles, birds, fish, wolves, bears, elks, bison, and let's not forget -- Bigfoot!

A YouTube post by user Mary Greeley, which was initially posted on Dec. 29, 2014, has suddenly caught the eye of many viewers, sparking analysis and mixed opinion about what exactly the video captured.

With almost 500,000 views -- and counting -- the clip has led skeptics, believers and curious observers alike to ponder what exactly are the beings seen walking about in the park?

For the most part of the video, you'll simply be watching bisons in their natural habitat, but wait a bit longer and something walking in the background will surely capture your attention and, yes, your imagination!

Greeley stated that she was totally oblivious to the likely Bigfoot sighting when she copied and uploaded the material.

Bigfoot believer ThinkerThunker posted on YouTube an analysis of the said video to answer cynics and naysayers.

"Would you risk death by buffalo to pull off a Bigfoot hoax? In this clip we see four big, furry something's (Bigfoot) stalking four buffalo in Yellowstone National Park," stated ThinkerThunker.

With these four beings seen only for a few minutes on the video, it is hard to come up with a definitive conclusion over what and who these beings are.

"People say a lot of crazy things about Yellowstone all the time and Bigfoot is just one of them," said Yellowstone National Park spokesperson Al Nash when asked about the sighting.

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