Last year one of my mexicana females laid a small clutch of eggs. 4-5 were obviously good and there was 1 very bad looking dud. I tossed the dud in a deli cup to dispose of it later... Well.. I forgot to throw it away..
Anyway, after 2 mos. it hatched--no incubation medium-- nothing but an old deli cup.
I had that snake out today and thought I'd post a newer pic of it.
I know I posted one of it as a hatchling.
I almost NEVER toss out "bad" eggs anymore!
:Mark