A sheepdog is a breed of dog. Some sheepdogs are used for controlling sheep. In general, any dog breed developed to herd sheep; specifically, the border collie. Most sheepdog breeds stand about 2 ft (60 cm) and weigh over 50 lbs (23 kg). The French briard has bushy brows and a long, waterproof coat. The Belgian sheepdog has long black hair and erect ears. The Hungarian puli has a coat of long ropelike cords. It stands 16-19 in. (41-48 cm) and weighs about 30 lbs (14 kg). See also Old English sheepdog, Shetland sheepdog
A herding dog of a breed developed in the Shetland Islands, having a rough coat and resembling a small collie. or sheltie Breed of sheepdog developed from a Scottish working dog to herd the small sheep of the Shetland Islands. The sheltie resembles the rough-coated collie but in miniature; it stands 13-16 in. (33-41 cm). Sturdy and agile, it is noted for its herding ability, intelligence, and affectionate nature. Its long, straight coat is generally black, brown, or blue-gray with black mottling
Any of an English breed of sturdy dog having a docked tail and a thick, shaggy, bluish-gray and white coat with fur that hangs over the eyes. Shaggy working dog developed in early 18th-century England and used primarily to drive sheep and cattle to market. It has a shuffling, bearlike gait and a dense, solid-coloured or white-marked gray or blue-gray coat. It stands 21-26 in. (53-66 cm) tall and weighs over 55 lb (25 kg). Its long, dense, weather-resistant coat covers the eyes but does not obscure vision. The tail is usually removed soon after birth