The Old English Sheepdog is a sturdy herding dog from the west of England, where farmers used it to drive cattle and sheep to market. Adults typically weigh 60 to 100 pounds and carry a profuse, shaggy double coat in gray, grizzle or blue with white. Puppies are born black and white and turn gray over the first year or two. The traditional docked tail earned the nickname Bobtail, though some dogs are born with natural bobtails.
Many are cheerful, patient and a little clownish, with a ringing bark and a habit of nudging people where they want them. In Dallas, the coat is the main thing to plan around. Brushing down to the skin every week, or regular professional grooming, keeps it from matting, and heat, humidity, burrs and mud all cling to it. Temperament varies from dog to dog, so spend time with the dog you're considering.