Dilute tortoiseshell is a coat pattern, not a breed. The blue-gray and cream patches come from a recessive dilution gene, and the patchwork depends on two X chromosomes, so nearly all of these cats are female. Most are domestic shorthairs or longhairs, though the coloring also appears in Persians, British Shorthairs and Maine Coons.
Coat color doesn't predict personality. Adopters should expect anything from shy to outgoing, so spending time with the cat tells you more than the label does. Adults typically weigh 6 to 14 pounds and often live 12 to 18 years, which makes this a long commitment worth planning around a rental lease and any future move.