Insofar as it goes, I know they're different subspecies of
P. obsoleta - but I'd still call that (and your two original animals) a hybrid. You'd be hardpressed to find a snake of that exact lineage in the wild
And yeah, looking at the two snakes, I think I'd stand by my initial impression... you'd probably get:
Brown North American Rat Snakes.
That said, I'd be interested to know what the offspring DID look like - and how readily they ate compared to, say, corn hatchlings. That Grey/Yellow hybrid is actually a very pretty animal - I like the proportioning of his head to his body.
That's something *I* would breed for
