Both the Scottish and the West Highland Terrier are descended from the lively, self-assured Cairn Terrier.
About the Cairn Terrier
Cairns are mounds of rough stones built as a memorial or landmark on a hilltop or slope in Scotland. They are used as hiding places by vermin, and Cairn Terriers were bred to hunt them down.
Cairn Terriers are active, hardy dogs, standing firmly on their forelegs, they move very freely, making great strides, while their hind legs drive them on strongly. Like all the working terriers, Cairns have a weather-resistant coat.
Source: key facts and characteristics sourced from Fédération Cynologique Internationale (FCI)