[masraum]

Originally Posted by ramonesfreak

Sounds like it’s a giant planaria, looks similar too

From wikipedia

Bipalium is a genus of large predatory land planarians. They are often loosely called "hammerhead worms" or "broadhead planarians" because of the distinctive shape of their head region. Land planarians are unique in that they possess a "creeping sole", a highly ciliated region on the ventral epidermis that helps them to creep over the substrate.[2] Several species are considered invasive to the United States,[3] Canada, and to Europe.

And as I was thinking, there are several species, and not all are invasive. Presumably, not all are dangerous.

I've seen them before. When we lived in the 'burbs, I ran across them a handful of times, very long and very thin. Ugly suckers.