The title lies. Nothing can make sense of a cat. I don’t even know why I have a cat at home — I blame the brain parasites.
While the mind of the cat is imponderable, at least we can understand coat colors, right? Mine is black with a white spot at the throat. Simple? No, not at all: you need to read this page that categorizes cat coat colors and patterns and sink into the madness. All that variability! The simple genetic models all talk about eumelanin and phaeomelanin expression as covering all the bases, but nope, that’s not sufficient.
I’ve shown this to my genetics students. I’m just teaching introductory genetics, but I occasionally like to point out to them that there is a level at which genetics becomes far more mind-blowing.