For Truth Seekers Only. Truth or Myth?

Here is how I see things like Dragons, Gryphon's, Giants, even shape shifters like Werewolfs, Faeries, Unicorns and Pegasus,...All these creatures keep coming up in every culture, do not seem to fade away and make down through countless generations to stay in the human consciousness,...There has to be some truth to them. I can accept inter dimensional as a theory, I can also ponder the theory that there was an prior advanced human population, maybe so advanced they figured out how to splice Eagle and Lion genes. I mean "we" are splicing spider and plant genes, "we" have mice growing human ears, what's next?