I find the subject fascinating.
People across different continents, and centuries, report similar sightings that can't be explained by scientific method.
You do realize that things (yet) beyond the scientific method are what the world has always called "magic" or "supernatural", etc...
Think about lightning. For thousands of years it was the Gods hurling their power to earth. Some still believe and/or refer to this belief.
Most "magic" has been explained away, or rather our reality has been expanded throughout the centuries, using scientific method.
Scientific method is about things being repeatable. However it's still hard for this method to prove "one offs" and rare events where we don't know all the conditions that make something repeatable .
What we can't deny is people are seeing something. But what is the phenomena?
A rare animal that's good at hiding? This would be the most "realistic" explanation, within the framework of how we know of reality, but where's the trail cam photos?
Some phenomena that is only visible temporarily?
- Looking through a time warp of a past animal? (How do I know that a deer I see in the field isn't a time warp from the past?)
- Alien visitor?
The power of suggestion?
Do we live in a reality that is the projection of our "thoughts" or "understandings"? (Think about how much science fiction (of our youth) becomes reality. How if we imagine it, we usually find a way for it to becomes reality. etc...)
I'm throwing a lot of far-out, crazy ideas out here.....and have no idea what the root of this phenomena is..my point being....we don't know everything about the world and scientific method has it's limits (but it's the best method we have).
I sort of like a world where's there's still magic.
"Yes Virginia, there is a Bigfoot!"