Domestic Long Hair is a coat description, not a breed. It covers mixed-ancestry cats with medium-to-long fur, and they turn up in nearly every color and pattern, from tabby and calico to solid black and smoke. Adults usually weigh 8 to 15 pounds, though the fluff can make a cat look bigger than it is.
Personality is just as varied, since it comes from a cat's genes, early socialization and life experience rather than a breed standard. In New Rochelle, where many homes are apartments, a calm, adaptable Domestic Long Hair is often an easy match, but plenty are playful climbers who want more space. What they share is a coat that needs regular brushing to prevent mats and hairballs, along with the general health benefits of mixed ancestry.