Jack Russell Terrier
From Wikipedia, the free encyclopedia
 |
This article may require copy-editing for grammar, style, cohesion, tone or spelling. You can assist by editing it now. A how-to guide is available. (February 2008) |
 |
This article contains weasel words, vague phrasing that often accompanies biased or unverifiable information. Such statements should be clarified or removed. (February 2008) |
 |
This article needs additional citations for verification. Please help improve this article by adding reliable references (ideally, using inline citations). Unsourced material may be challenged and removed. (June 2008) |
 |
The examples and perspective in this article deal primarily with the United States and do not represent a worldwide view of the subject. Please improve this article or discuss the issue on the talk page. (February 2009) |
 Smooth Coat Jack Russell Terrier |
||||
| Nicknames | JRT Jack |
|||
|---|---|---|---|---|
| Country of origin | England | |||
|
||||
|
||||
The Jack Russell Terrier is a small, principally white-bodied, smooth-, broken-, or rough-coated terrier that has its origins in fox hunting. The name "Jack Russell" has been used over the years to describe a wide array of small white terriers, but now after a drawn out legal battle the JRTCA (Jack Russell Terrier Club of America) and its affiliates have won the exclusive rights to use the name Jack Russell Terrier in the USA to describe their particular variant of the dog.
Contents |
[edit] Description
Jack Russell Terriers are sturdy and tough, measuring between 10" and 15" at the shoulder. The body length must be in proportion to the height, and the dog should present a compact, balanced image. Predominantly white in coloration (more than 51%) with black and/or tan markings, [1] they exhibit a smooth, broken or rough coat. The skin can sometimes show a pattern of small black or brown spots, referred to as "ticking", that do not carry through to the outer coat. All coat types should be dense double coats that are neither silky (in the case of smooth coats) nor woolly (in the case of rough coats). The head should be of moderate width at the ears, narrowing to the eyes, and slightly flat between the ears. There should be a defined stop at the end of the muzzle where it meets the head but not overpronounced, with a black nose. The jaw should be powerful and well boned with a scissor bite and straight teeth. The eyes are almond shaped and dark colored, and should be full of life and intelligence. Small V-shaped ears of moderate thickness are carried forward on the head. When the dog is alert the tip of the V should not extend past the outer corner of the eyes. The tail is set high and docked to approximately five inches in order to provide a sufficient hand-hold for gripping the terrier. It is a serious fault for the dog to have its tail down when in the show ring. The Jack Russell should always appear balanced and alert.[1]
As the Jack Russell is primarily a working terrier, its most important physical characteristic is its chest size, which must not be so large that it prevents the dog from entering and working in burrows. The red fox is the traditional quarry of the Jack Russell Terrier (JRT) so the working Jack Russell must be small enough to pursue its quarry. Jack Russells vary in size, but across the world they average about 14 pounds in weight and have a chest diameter of 12-14 inches at the widest. As Barry Jones, the founding Chairman of the National Working Terrier Federation noted:
The chest is, without doubt, the determining factor as to whether a terrier may follow its intended quarry underground. Too large and it is of little use for underground work, for no matter how determined the terrier may be, this physical setback will not be overcome in the nearly-tight situations it will encounter in working foxes. It may be thought the fox is a large animal - to the casual observer it would appear so. However, the bone structure of the fox is finer than that of a terrier, plus it has a loose-fitting, profuse pelt which lends itself to flexibility. I have not encountered a fox which could not be spanned at 14 inches circumference - this within a weight range of 10 lbs to 24 lbs, on average 300 foxes spanned a year.[citation needed]
The chest of a Jack Russell should be easily spannable by the average size hands, meaning that if one wraps their hands around the dogs chest, directly behind their front legs, one should be able to put thumb to thumb, and forefinger to forefinger.[citation needed]
[edit] Temperament
The Jack Russell is first and foremost a working terrier. Originally bred to bolt fox from their dens during hunts, they are used on numerous ground-dwelling quarry such as groundhog, badger, and red and gray fox.[citation needed] The working JRT is required to locate quarry in the earth, and then either bolt or hold it in place until it is dug to. To accomplish this the dog must bark and work the quarry continuously. Because the preservation of this working ability is of highest importance to most registered breeders Jack Russells tend to be extremely intelligent, athletic, fearless, and vocal dogs. Jack Russells have endless energy and have tendency to dig. It is not uncommon for these dogs to become moody or destructive if they are not properly stimulated and exercised as they have a tendency to bore easily and will often create their own fun when left alone to entertain themselves.
|
|
This article contains instructions, advice, or how-to content. The purpose of Wikipedia is to present facts, not to train. Please help improve this article either by rewriting the how-to content or by moving it to Wikiversity or Wikibooks. |
Their high energy and drive make these dogs ideally suited to a number of different dog sports such as flyball or agility. Obedience classes are also recommended to potential owners as Jack Russells can be stubborn at times and aggressive towards other animals and humans if not properly socialized (a process that should continue throughout their whole lives). Jack Russell Terriers can be very hyper. Despite their small size, these dogs are not recommended for the condominium or apartment dweller unless the owner is ready to take on the daunting task of providing the dog with the necessary amount of exercise and stimulation. These are truly a big dog in a small package, and most suffer from a "Napoleon complex", which can sometimes lead to trouble involving larger animals. The JRT owner must be aware of these tendencies and keep an eye out for trouble in many situations.[2]
[edit] Health
Jack Russell terriers are known for longevity and health due in a large part to a large gene pool. The JRTCA specifically regulates inbreeding and line breeding to a 16% coefficient unlike many of the kennel club show dog breeds. A well-cared-for Jack Russell can live well into its teens, remaining active right into its senior years. The typical lifespan is between 12 and 19 years.
Health concerns with the breed include hereditary cataracts, primary lens luxation, congenital deafness, medial patellar luxation, cerebellar ataxia, Legg-Calve-Perthes Disease, myasthenia gravis, atopy, general joint problems, and von Willebrand's disease. Responsible breeders have breeding stock BAER tested for hearing as juveniles and CERF (Canine Eye Registry Foundation) tested annually to check for any hereditary defects. Although not commonly a problem in this breed, some breeders choose to have their dogs OFA inspected for potential joint problems.
[edit] History
The small white fox-working terriers we know today were first bred by the Reverend John Russell, a parson and hunting enthusiast born in 1795. In his last year of university at Oxford, he bought a small white and tan terrier female called Trump from the milk man. Trump was purchased based upon appearance alone. (Burns, 2005) She was the basis for a breeding program to develop a terrier with high stamina for the hunt as well as the courage and formation to chase out foxes that had gone to ground. An important attribute in this dog was a tempered aggressiveness that would provide them with the necessary drive to pursue and bolt the fox without resulting in physical harm to the quarry, effectively ending the chase, which was considered unsporting. This line of terriers developed by John Russell was well respected for these qualities and his dogs were often taken on by hunt enthusiasts. It is unlikely, however, that any dogs alive today are descended from Trump, as Russell was forced to sell all of his dogs on more than one occasion because of financial difficulty, and had only four aged (and non-breeding) terriers left when he died in 1883.[3]
The only painting that exists of Trump was painted more than 40 years after the dog died, and it was painted by someone who had never seen the original animal. Russell said the painting was "a good likeness", but he may have been more polite than honest in this.[citation needed] The painting was commissioned by Edward VII (then Prince of Wales) who befriended Russell in his old age, and had the painting done as an homage to the old man.[3]
While it is often stated that Trump was "14 inches tall and weighed 14 pounds," there is no source for this statement, and it appears to have been penned by someone who had never met Russell and had only seen the painting of Trump (to which there is nothing to suggest scale).[3]
While Trump's appearance is vague, and her size a complete mystery, the fox dens of Devon, England, where John Russell once hunted, are well known. Terrierman Eddie Chapman, who has hunted those same Devon earths for more than 30 years, notes that "I can state categorically that if given the choice, ninety-nine percent of hunt terrier men would buy an under 12" worker, if it was available, over a 14" one."[4].
[edit] Well-known Jack Russell Terriers
On April 29, 2007, a Jack Russell named George saved five children in New Zealand from an attack by two pit bulls. He was reported to have charged at them and held them at bay long enough for the children to get away. He was killed by the pit bulls, and in 2009 was posthumously awarded the PDSA Gold Medal, the animal equivalent of the George Cross.[5] A former US Marine also donated a Purple Heart award he received for service in Vietnam to George's owner. [6]
[edit] On screen and in literature
A Jack Russell named Russell the Muscle stars in the music video for 1980s hit "Just Got Lucky" by JoBoxers.[7]
In the UK, one of the more recognisable canine stars was restaurateur and chef Rick Stein's irrepressible terrier Chalky, who frequently upstaged his owner on his various cookery series. He was unique in having his own line of merchandise, including plushes, tea towels, art prints, art paw prints and even his own real ale - Chalky's Bite. He earned a BBC obituary when he died in 2007.[8]
Two Jack Russells, father Moose and son Enzo, played the role of Eddie[9], on the long-running TV sitcom Frasier. Eddie belonged to lead character Frasier's father Martin, and constantly "stole the show" with his deadpan antics. Eddie received more fan mail than any other Frasier character.[10]
Willie Morris's autobiography My Dog Skip, which later became a film directed by Jay Russell, featured a Jack Russell who was bought as a companion for a shy boy who found it difficult to make friends. In the film, Skip was played by 5 different dogs as the boy aged, including father and son pair Moose and Enzo who played Eddi from Frasier
The television show Wishbone also featured a Jack Russell as Wishbone, the story-telling dog who would take viewers through a famous story, such as Adventures of Huckleberry Finn.
[edit] Footnotes
- ^ a b Jack Russell Terrier: JRTCA: Breed Standard
- ^ Jack Russell Terrier: Breed: Bad Dog Talk
- ^ a b c Burns, Patrick (2005). American Working Terriers. ISBN 141166082X.
- ^ Chapman, Eddie (1994). The Working Jack Russell Terrier. http://www.terrierman.com/terrierbooks.htm.
- ^ Brave Dog Died To Save Children
- ^ Medals for brave jack russell terrier | NATIONAL | NEWS | tvnz.co.nz
- ^ New Wave Outpost Message Board - Dig Wayne Of Jo Boxers?
- ^ BBC NEWS | England | Cornwall | Celebrity chef Stein's dog dies
- ^ "Frasier" on IMDB
- ^ IMDB Bio for Moose
[edit] Further reading
- Lucas, Capt. Jocelyn M. "Hunt and Working Terriers", 1931. UK.
- Russell, Dan. "Jack Russell and His Terriers." 1990. ISBN 978-0-851-31276-7
[edit] See also
 |
Wikimedia Commons has media related to: Jack-Russell-Terrier |
[[
