The setter is a type of gundog used most often for hunting game such as quail, pheasant, and grouse.
In the UK, the four setter breeds together with the pointer usually form a sub group within the gundog group as they share a common function. However, the setter breeds each have subtle differences in head, bone and substance.
The American and Canadian Kennel Clubs classify these breeds within the sporting group. Setters from show lines are usually considered to be heavier and larger than those from 'working' lines.
A setter silently searches for game by scent; hunting is done systematically and methodically. When prey is encountered the dog freezes rather than chasing after the game. Setters get their name from their distinctive stance; a sort of crouch or "set" upon finding their quarry. Once the dog has indicated where the birds are by freezing on point, the birds are then flushed so the following guns can get a shot. In earlier times before guns were used, a net would be used to trap the birds.
The scent of game birds is airborne so to pick up this scent the setter carries its head well up and should never follow foot scent. Most setters are born with a natural proclivity to hunting. Dogs which show excitement and interest in birds are described as being "birdy", and trainers look for puppies that show this particular trait. Training is usually done with quail as a first choice or domesticated pigeons.
This group of dogs combines beauty, brains and bird sense; the early setter breeds are believed to have been developed as far back as the 15th century in the UK. The ancestors of modern setters probably originated in Spain and were bred from spaniel stock. Later, these dogs were exported to France and England where the breeds were developed into today's varieties.
They are fast, stylish game-finding dogs with a unique history and evolution for the single purpose of finding game birds. Writing in 1576 Dr Johannes Caius states "There is also at this date among us a new kind of dogge brought out of Fraunce, and they bee speckled all over with white and black, which mingled colours incline to a marble blewe". Argue speculates this may be a description of the blue belton colour found in English setters.