Calico describes a coat, not a breed: white with patches of orange and black, or softer cream and gray in the dilute version. Nearly all calicos are female, and most found in Baton Rouge homes are domestic shorthairs, so weights of about 6 to 12 pounds and lifespans of 12 to 18 years are typical.
In a humid, mild-winter city, the practical details matter more than the patches. A short coat sheds moderately and needs weekly brushing, while a longhaired calico needs more attention to prevent mats. Personality varies from cat to cat, so spend time with the cat you're considering and notice how she handles being held, new sounds and other pets. Her patches say very little about her temperament.