Tuxedo describes a coat pattern rather than a breed: a bicolor cat, usually black and white, with a white chest like a shirtfront and often white paws or chin. Grey-and-white tuxedos exist too. The pattern comes from white spotting in the KIT gene, and because it isn't sex-linked, males and females are about equally common. Most are domestic shorthairs, though the pattern also appears in breeds such as the Maine Coon and British Shorthair.
Stories about tuxedos being unusually smart or bold are fun but unproven, since color doesn't set personality. In Trenton's rowhouses, what matters more is how a cat handles stairs, shared walls and close quarters. Shedding is moderate, so a weekly brush and a lint roller go a long way. With lifespans of 12 to 18 years, adopting a Tuxedo is a long commitment.