The Chicken or the Egg?
Some people do not believe in anything of a paranormal nature. Others see all the evidence–and there is evidence, just not of a physical variety–see that the evidence is overwhelming, enough to stand up in any court a hundred times over, and accept that there must be more to reality than what we are able to cut and measure inside a laboratory. There are literally billions if not trillions of eyewitnesses to paranormal phenomena, and if even one of those sightings is accurate, that constitutes credible evidence. It is mathematically impossible that they are ALL bogus. Ergo, some must be genuine. Ergo, things of a paranormal nature do exist.
I believe that such phenomena take different forms. Maybe what we see as a Sasquatch is not always a Sasquatch. There ARE eyewitness accounts of ABCs (Alien Big Cats, i.e. larger-than-they-should-be black panthers in places that black panthers, oversized or otherwise, simply should not be) changing forms right in front of witnesses.
There are werewolves. Maybe not the kind seen in the movies, but sightings of beings that physically fit the werewolf description. The Michigan Dogman, the Bray Road Beast of Wisconsin, Ol’ Stinker of Hull. Are these beings always werewolf-like in appearance? Do they sometimes assume other forms? Nobody knows. We can safely say, though, that they do sometimes appear as “werewolves.” Were sightings of such creatures, then, what fueled the belief in werewolves in the first place? Or did the creatures start appearing as werewolves because human beings believed in werewolves, and the creatures were merely taking on the shapes of things with which humans would be familiar?