Domestic Long Hair isn't a breed. It's the label used for mixed-ancestry cats with long coats, the fluffy counterpart of the Domestic Short Hair. They come in every color and pattern, from tabby and calico to solid black, smoke and bicolor, and some look a lot like a Maine Coon or Persian without sharing that ancestry. Adults usually weigh 8 to 15 pounds, though long fur can make a cat look bigger than it is.
Because there's no breed standard, size, coat texture and personality vary from cat to cat, so spend time with a cat before deciding. What most share is a coat that needs regular brushing to prevent mats and hairballs, plus the genetic diversity that tends to keep mixed cats healthy. In Modesto, brushing matters most in the dry, dusty summer months, when mats can trap debris against the skin.