Dog type
Dog types are broad categories of domestic dogs based on form, function or style of work, lineage, or appearance. Some may be locally adapted dog types that may have the visual characteristics of a modern purebred dog. In contrast, modern dog breeds strictly adhere to long established breed standards, that began with documented foundation breeding stock sharing a common set of inheritable characteristics, developed by long established, reputable kennel clubs that recognize the dog as a purebred.
A dog type can be referred to broadly, as in gun dog, or more specifically, as in spaniel. Dogs raised and trained for a specific working ability rather than appearance may not closely resemble other dogs doing the same work, or any of the dogs of the analogous breed group of purebred dogs.
Names in English
The earliest books in the English language to mention numbers of dog types are from the "Cynegetica", namely The Art of Venery 1327 by Twiti, a treatise which describes hunting with the limer, the pack of running hounds greyhounds, and alaunts. More significantly in recording the use and description of various dog types, The Master of Game circa 1406 by Edward of York a treatise which describes dogs and their work, such as the alaunt, greyhound, pack scent hounds, spaniel, and mastiff used by the privileged and wealthy for hunting purposes. The Master of Game is a combination of the earlier Art of Venery and the famous French hunting treatise Livre de Chasse by Gaston Phoebus circa 1387. The Boke of St. Albans, published in 1486 a "school" book about hawking, hunting, fishing, and heraldry, attributed to Juliana Berners, lists dogs of the time mainly by function: " First there is a greyhound, a bastard, a mongrel, a mastiff, a limer, a spaniel, raches, kennets, terriers, butcher's hounds, dung-heap dogs, trundel tails and prick-eared curs, and small ladies puppies that bear away the fleas and diverse small sorts".Almost 100 years later, another book in English, De Canibus Britannicus by the author/physician John Caius, translated from Latin in 1576, attempts the first systematic approach to defining different types of dogs in various categories, demonstrating an apparent increase in types, and population. "English dogs": the gentle kind, serving game—harriers, terriers, bloodhounds, gazehounds, greyhounds, limers, tumblers and stealers; "the homely kind"; "the currish kind", toys. "Fowling dogs"—setters and spaniels. As well as the pastoral or shepherd types, mastiffs or bandogs, and various village dogs. Sub-types describing the function of dogs in each group were also included.
Beginning with the advent of dog shows in the mid-19th century in England, dog fanciers established stud books and began refining breeds from the various types of dogs in use.
Dog types and modern breeds
"It is important," remind Ann Rogers Clark and Andrew Brace, "Not to claim great age for breeds, though it is quite legitimate to claim considerable antiquity for types of dogs." The attempts to classify dogs into different 'species' show that dog types could be quite distinctive, from the 'Canis melitaeus' of lapdogs descended from ancient Roman pet dogs to the even more ancient 'Canis molossus', the Molossan types, to the 'Canis saultor', the dancing mongrel of beggars. These types were uniform enough to appear to have been selectively bred, but as Raymond Coppinger wrote, "Natural processes can produce, could produce, and do produce populations of unusual and uniform dogs, that is, dogs with a distinctive conformation." The human manipulation was very indirect. In a very few cases, Emperors or monasteries or wealthy hunters might maintain lines of special dogs, from which we have today Pekingese, St. Bernards, and foxhounds.At the beginning of the 19th century there were only a few dogs identified as breeds, but when dog fighting was outlawed in England in 1835, a new sport of dog showing began. Along with this sport came rules and written records and closed stud books. Some of the old types no longer needed for work were remade and kept from extinction as show dogs, and other old types were refined into many new breeds. Sometimes multiple new breeds might be born in the same littler of puppies. In 1873 only 40 breeds and varieties were known; today there are many hundreds of breeds, some 400 are recognized by the Fédération Cynologique Internationale. Dog types today are recognized in the names of Group or Section categories of dog breed registries. Named types of dogs that are not dog breeds are still being used where function or use is more important than appearance, especially for herding or hunting, as with the herding dog types of New Zealand that are described by their exact function.
Other uses of the word ''type'' in dogs
For biologists, a type fixes a name to a taxon. Dog fanciers use the term breed type in the sense of “qualities that are felt to indicate excellence in members of a group”. Breed type is specific to each dog breed's written standard. A dog that closely resembles the appearance laid out in the standard is said to be typey. Type also is used to refer to "dogs of a well established line" an identifiable style of dog within the breed type, usually from a specific kennel.Trainability and boldness
In 2011, a study found that herding dogs were more trainable than hounds, working dogs, toy dogs and non-sporting dogs. The sporting dogs were more trainable than non-sporting dogs. Terriers were bolder than hounds and herding dogs. Breeds with ancient Asian or African origin were less trainable than breeds in the herding/sighthound cluster and the Hunting breeds. Breeds in the mastiff/terrier cluster were bolder than the ancient breeds, the breeds in the herding/sighthound cluster, and the hunting breeds.Footnotes
Note 1. Every modern dog breed has a written Standard, that describes in detail aspects of appearance. Standards are the basis of the sport of dog showing, as each dog is compared against the ideal of the written standard and awards are based on how closely the dog resembles the standard.Note 2. Many modern breeds of dogs still use the names of early types, although they may or may not resemble the old types.