Are the Border Collie and the Smooth Collie both breeds of dog?
Smooth Collie The Smooth Collie is a breed of dog developed originally for herding. It is a short-coated version of the Rough Collie of Lassie fame. Some breed organisations consider the smooth-coat and rough-coat dogs to be variations of the same breed.
Lurcher The lurcher is the offspring of a sighthound mated with another breed, most commonly a pastoral breed or a terrier type of dog. Brian Plummer identifies the Norfolk lurcher as the predecessor of the modern lurcher. While not a pure breed, it is generally a cross between a sighthound and a working dog breed. Collie crosses are popular, given the working instinct of a sheepdog when mated with a sighthound gives a dog of great intelligence plus speed—prerequisites for the hunter/poacher. In the US midwest, crosses with large scent hounds are fairly common.