sheepdog

sheepdog: see working dog.

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.

Learn more about Shetland sheepdog with a free trial on Britannica.com.

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.

Learn more about Old English sheepdog with a free trial on Britannica.com.

See Sheep dog