Dilute calico describes a coat, not a breed: white with soft patches of blue-gray and cream, the pastel cousin of the black, orange and white calico. The dilution comes from a recessive gene, and the amount of white ranges from a few marks on the paws to most of the body. Nearly all are female, since the orange color gene sits on the X chromosome.
Most dilute calicos are domestic shorthairs or longhairs, though the pattern also shows up in Persians, Maine Coons and other breeds. Coat color tells you little about personality, so a calico may be cuddly, shy, bold or aloof, and age and background are better guides. A medium-size cat of 6 to 14 pounds usually fits easily in a rowhouse, and longhaired ones just need a regular brushing routine.