there are some (I believe a relatively small number) of Christians who read Genesis as implying that the first female mated with the snake (serpent in some translations), out of which event Cain was conceived (with Abel still conceived by the mating with Adam)
I’m not pushing this interpretation, I believe it to be in error. Its just interesting how it appears to parallel the account in this article...?
If you are ever near the backwaters of Adams County, Ohio, Serpent Mound is well worth a side trip. Same for the Mound City park just north of Chillicothe.
Or it is a prehistoric Sex Ed and VD prevention Class.