I think children born in a full moon night can have an occult status added to them even if parents are not occults. I've read this before, not sure if it's an Nraas mod feature or game one.
Either that or Pip Goodfellow pulled a baby switch again :p

There is tuning in the Pregnancy XML for a random occult mutation (20% chance) on the full moon regardless of genetics. It's possible for both human and occult sims.

^^^ I take that back it doesn't work for human sims but then again even when both parents were occult's and having the chance in the XML at 100% it didn't work for them either.

I do have the moon babies mod but I genuinely thought the occult mutation meant that they would mutate into an occult. Like X Men? That's what happens in X Men yeah? Why would I read that as an already occult baby mutating into a different occult type? That makes no sense to me....

Sitting Bear are you saying the mod for full moon babies also does not work for humans?

@yuk75 I was talking about the tuning that I found in the Pregnancy XML not the full moon mod.

Oh thank god.