Well - it was on the inter-webs, so take it as that. Sounds reasonable though.
What intrigues me more than these stories (that go back hundreds of years in Native lore), is if there is no such thing as a Yeti/Bigfoot/Mothman/Aliens (heck maybe even aliens in the Bible with chariots in the sky) - what in our human mind/soul wants to think that there is?
Your parents told you there was no such thing as monsters for a good reason, that doesn’t mean democrats aren’t real.