Is Tuxedo Cat Genetics Linked to Personality?

No. Despite persistent internet claims that tuxedo cats are "more intelligent" or "more affectionate," there's no peer-reviewed evidence linking the KIT gene variants responsible for bicolour patterns to behavioural traits. A 2015 study from the University of California, Davis, surveying over 1,200 cat owners, found no statistically significant correlation between coat colour and aggression, sociability, or trainability. Vino is loud, demanding, and absurdly social, but that's Vino. It isn't his coat pattern.

Can Two Tuxedo Cats Produce a Solid-Coloured Kitten?

Yes. If both parents are heterozygous for the white spotting variant (carrying one copy each), approximately 25% of their kittens can inherit two non-spotting alleles and be born solid-coloured. Tuxedo cat genetics follow standard Mendelian inheritance at the KIT locus, even though the final pattern expression involves the non-Mendelian migration process described above.

Why Don't Tuxedo Cats Have White on Their Backs?

Because melanoblasts originate at the neural crest, which runs along the embryo's dorsal (back) side. The back is the first area colonised; it's the starting point of the pigment migration wave. White patches appear on the ventral (belly) side, the paws, and the face because those are the endpoints of migration. A tuxedo cat with a white back would require an extremely unusual developmental disruption, not just a standard KIT variant.

Tuxedo Cat Genetics: The Science Behind the Black & White Coat