Tuxedo is a coat pattern, not a breed. The cat is bicolor, usually black and white, with a white chest that looks like a shirtfront and often white paws, chin or a blaze on the face. Grey-and-white versions 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 Tuxedos are domestic shorthairs, though the pattern also shows up in breeds like the Maine Coon and British Shorthair. They usually weigh 6 to 14 pounds and often live 12 to 18 years, so adopting one is a long commitment. Stories about Tuxedo personalities are fun but unproven. In Hopkinsville, choose a cat by age, energy and coat length, not by color.