OK, so I just went all over the place trying to find another Ditto because my first one didn't like my Anorith, but they wound up having an egg anyway.
But then I decided to breed my Shuckle. She has a Careful nature, and so does one of the Dittos. Match made in heaven, right? Well, these two don't like each other EITHER! I thought having the same nature would make them compatable!
So how is compatability determined if not by natures then?