Calico describes a coat, not a breed: white with patches of black and orange, or soft gray and cream in the dilute version. The pattern shows up in domestic shorthairs and longhairs and in some pedigreed breeds. Nearly all calicos are female, because the orange and black color genes sit on the X chromosome.
In Seattle, a calico is most likely a domestic shorthair weighing roughly 6 to 12 pounds, with a lifespan of 12 to 18 years. Her care looks like any house cat's: regular vet visits, dental care, daily play and a calm place to settle in. Folklore credits calicos with attitude, but coat color doesn't predict personality, so spend time with a cat and see how she behaves.