Domestic Medium Hair is a coat description, not a breed. It covers mixed-ancestry cats with fur between short and long: a fuller tail, tufts between the toes and a soft undercoat, but no heavy ruff. They come in every color and pattern, and most weigh 6 to 14 pounds and live 12 to 18 years.
Because ancestry is mixed, size, personality and health follow the cat rather than a breed standard. Many are adaptable and affectionate once settled, though some stay shy for a long time. In Boynton Beach's warm, humid climate, a semi-long coat needs brushing a few times a week to prevent mats and hairballs, and that's the main care difference from a shorthair. Meeting the cat is the best guide to temperament.