User blog comment:Bbun/CrossXDark Litter Two/@comment-5927403-20130329035213/@comment-3390500-20130329161858

Actually no, even kittypets can't naturally have blue eyes. Sometimes there are mutations that cause a cat to randomly get blue eyes, but it's quite rare, /is/ a mutation, and has nothing to do with kittypet blood. There used to be a specific breed that had blue eyes no matter what the pelt color, but the gene for it came with so many risks and deformities, and was lethal if the cat got two of the genes, that it's no longer bred for and most likely dangerous in a cat seen with it. So no, naturally no healthy black cat without white can have blue eyes.