The Collie began as a Scottish sheep-herding dog and was refined in Victorian Britain into the elegant look people know from Lassie: a long, wedge-shaped head, expressive eyes and a dense double coat. Rough Collies have the flowing mane, while Smooth Collies have a short, sleek coat. Both are the same breed.
Many Collies are gentle, sensitive and closely tuned to their families, and they have a long reputation for patience with children. Herding instincts can show up as barking or circling, which matters on busy sidewalks and near traffic. Expect heavy seasonal shedding, regular brushing and a veterinarian who knows about the breed's drug sensitivity.