Tortoiseshell describes a coat, not a breed. A tortie's fur mixes black-based and orange-based colors in patches or a fine mottle, usually with little or no white. Dilute torties show soft gray and cream, and torbies add tabby stripes. Nearly all are female because the orange gene sits on the X chromosome.
Most torties in Shawnee homes are domestic shorthairs or longhairs, medium-sized cats of roughly 6 to 14 pounds that often live 12 to 18 years, so adopting one is a long commitment. They shed moderately, and a weekly brushing keeps fur off the furniture. The reputed tortitude is folklore more than proof; a cat's age, history and socialization say far more than color.