Berger Blanc Suisse
Encyclopedia
The White Shepherd Dog emerged from white coat lines of the German Shepherd Dog
. The White Shepherd breed was officially recognized by the United Kennel Club on April 14, 1999. It was awarded provisional recognition as a breed
by the Fédération Cynologique Internationale
on November 26, 2002 as the Berger Blanc Suisse
. Provisional was changed to official recognition on July 5th, 2011 and the Berger Blanc Suisse breed is eligible for CACIB as of July 6th, 2011.
Information provided in early books on the German Shepherd Dog make mention of Greif and other white German herding dogs, with upright ears and a general body description that resembles modern German Shepherd Dogs, shown in Europe as early as 1882. The early 20th century German Shepherd breeding program extensively line bred and inbred "color coat" dogs that carried Greif's recessive gene for "white coats" to refine and expand the population of early German Shepherd Dogs. White coats were made a disqualification in the German Shepherd Dog Club of Germany breed standard in 1933 after the breed club came under the control of the German Nazi party that took over all aspects of German society in February 1933 when Hitler declared a state of emergency
. The German breed standard remained unchanged as German breeders repopulated the breed in the years after the conclusion of WWII.
In 1959 the German Shepherd Dog Club of America (GSDCA) adopted the exclusively colored breed standard of the parent German breed club. White-coated German Shepherd Dogs were officially barred from competition in the American Kennel Club conformation ring in the United States starting in 1968. AKC-registered white German Shepherd Dogs may still compete in performance events.
During the 1970s, white dog fanciers in the United States and Canada formed their own "White German Shepherd" breed clubs, breeding and showing their dogs at small specialty dog shows throughout North America.
The White Shepherd Club of Canada (WSCC) has been dedicated to the promotion and preservation of the White Shepherd since 1971. Originally formed as a Chapter of the White German Shepherd Dog Club of America, the club was renamed White Shepherd Club of Canada in 1973. Its first conformation show was held that year with 8 dogs entered and 25 people in attendance.
In Canada, the Canadian Kennel Club (CKC) is incorporated under the Animal Pedigree Act, a federal statute under the auspices of the Ministry of Agriculture, which is the governing body that sets down recognition and standards for all pure animal breeds. For a long time, Agriculture Canada had protected white German Shepherds from the many attempts by the German Shepherd Dog Club of Canada to have white dogs disqualified from the CKC conformation ring, as had long been the case in the USA. Some brave members of WSCC had shown in the CKC breed rings and had even accumulated points toward their dogs' CKC Championships. Unfortunately, that would all change in 1998, when the color white was officially disqualified from the CKC German Shepherd breed standard.
Disappointed but undeterred, the WSCC continues to work toward full breed recognition of the White Shepherd as a separate breed with the CKC. The club hosts shows several times a year, often in combination with the American White Shepherd Association. Event dates and locations are published in the club's newsletter and on its web site.
In September 1995, a small group of fanciers of the white-coated German Shepherd Dog established the American White Shepherd Association (AWSA), a new club to advance, promote and protect the White Shepherd breed in the United States. In cooperation with the White Shepherd Club of Canada, AWSA wrote and published a new breed standard, and eventually petitioned the American Kennel Club for full recognition as a unique pure breed, separate from and independent of the German Shepherd Dog. As of this writing, AKC has not granted recognition or registration for the White Shepherd breed, but the breeders, fanciers and members of AWSA carry on with independently-held club activities as well as running and maintaining the private club registry. AWSA continues to negotiate with the AKC for breed recognition as well as with the German Shepherd Dog Club of America (GSDCA) for breed separation. Until such time as GSDCA can be persuaded to grant official release of the white dogs, AKC must continue to register all white German Shepherd Dogs born from two AKC-registered German Shepherd parents as German Shepherd Dogs.
In 1999, a group of AWSA members organized and established the United White Shepherd Club (UWSC) as a United Kennel Club affiliated parent club. They immediately petitioned for a new White Shepherd breed classification within UKC. The United Kennel Club accepted the UWSC's petition and created a new and separate White Shepherd breed conformation standard and registry. The White Shepherd breed was officially recognized by UKC on April 14, 1999. Today, United Kennel Club recognizes both the White Shepherd breed standard as well as the original German Shepherd Dog breed conformation standard where white and colored dogs continue to be considered together as one breed.
Neither UKC nor AWSA-registered White Shepherds can be registered with FCI as White Swiss Shepherd Dogs (Berger Blanc Suisse). Breed clubs associated with each of these unique breed lines maintain their own breed standards for appearance and temperament. The breed "appearance" standard given below is appropriate to the UKC-registered White Shepherd Dog and, with a few very minor changes - mostly in wording and layout - to the written standard of the AWSA club as well.
No matter which country they hail from, White Shepherds excel in performance events such as competition obedience and rally obedience, tracking, flyball and agility. Many fine dogs have also earned titles in herding, proving that the herding instinct and ability has been retained in this versatile breed.
The White Shepherd, as recognized by UKC, is a medium-sized, well-balanced, muscular dog, slightly longer than tall, with a medium length, pure white coat, erect ears, and a low-set natural tail that normally reaches to the hock and is carried in a slight curve like a saber. The White Shepherd is solid without bulkiness and should be shown in lean, hard physical condition. The outline of the White Shepherd is made up of smooth curves rather than angles. When trotting, the White Shepherd moves with a long, efficient stride that is driven by a powerful forward thrust from the hindquarters. The rear leg, moving forward, swings under the foreleg and touches down in the place where the forefoot left an imprint. Gender differences are readily apparent.
The White Shepherd should be evaluated as an all-around working dog, and exaggerations or faults should be penalized in proportion to how much they deviate from breed type; and how much they interfere with the dog's ability to work.
The head is proportional to the size of the dog. Males appear masculine without coarseness, and females feminine without being overly fine. The skull and muzzle are of equal length, parallel to one another, and joined at a moderate stop. There is little or no median furrow.
The White Shepherd has a weather-resistant double coat. The outer coat is dense, straight, harsh, and close lying. The undercoat is short, thick, and fine in texture. At the neck, the coat may be slightly longer and heavier, particularly in males. Ideal coat color is a pure white. Colors ranging from a very light cream to a light biscuit tan are acceptable but not preferred.
It is a disqualification for dogs to have noses not predominantly black.
The tail is set on low in a natural extension of the sloping croup. The tail extends at least to the hock joint and usually below.
The appearance standard for United Kennel Club registered dogs is very similar to but not exactly the same as for other separate breed lines such as the AWSA-registered White Shepherd or the FCI internationally recognized Berger Blanc Suisse (White Swiss Shepherd Dog). While all of the existing breed lines have a common genetic heritage with the white-coated members of the German Shepherd Dog breed, they are each separately registered with their respective clubs or registries which also maintain the individual breed appearance standards.
White Shepherds are very loyal and tend to be especially protective of the young of various species. With their playful and curious personalities, they make wonderful companions although some do have the tendency toward being quite vocal by exhibiting whining, grunting, and moaning.
trials, obedience
, Rally obedience
, Schutzhund
, showmanship
, flyball
, tracking
, and herding
events. Herding
instincts and trainability can be measured at noncompetitive herding tests. White Shepherds that exhibit basic herding instincts can be trained to compete in herding trials.
ce, ca and cch allele
s of the so called (C) gene caused the cream and white coat color variants in domestic dogs. Little's hypothesized partial albinism explanation for cream and white colored coats has been applied across most domestic dog breeds, including white coat dogs from German Shepherd breed lines, since Little first published his book.
However, comparative analysis of the dog genome and specific breed DNA
sequences now shows that Little's hypothesized gene (C) color dilution explanation for cream and white colored coats is most likely not a relevant determinant of cream and white coats known to commonly occur in many dog breeds. Little's 1957-era partial albinism dilution explanation, as applied to explain domestic dog white and cream coat colors, can be replaced by the findings of modern genetic research.
Research has shown that a recessive e allele at the Extension (E) gene is at least partially responsible for cream and white coat color. The (E) gene, now identified as the Melanocortin 1 receptor
(MC1R) gene, is one of the two genes known to code for alleles that are absolutely fundamental to the formation of all German Shepherd Dog colored coat variations. When the recessive allele is inherited from each breeding pair parent, the e/e genotype
offspring of certain breeds, including white coat dogs from German Shepherd breed lines, always have cream or white colored coats.
White Shepherds were once blamed for color dilution or paling for the entire breed because the recessive e allele of the MC1R (E) gene locus masks expression of alleles at other gene loci that actually do code for lighter (often termed as diluted or pale) colors of silver, black and tan or liver. German breeders of the 1920s and 1930s misinterpreted pale-colored offspring of white dogs as an undesirable "white" genetic trait. A homozygous dog of normal color paired with a white GSD always produces full colored puppies because the e allele is recessive.
German Shepherd Dog
The German Shepherd Dog , also known as an Alsatian or just the German Shepherd, is a breed of large-sized dog that originated in Germany. The German Shepherd is a relatively new breed of dog, with its origin dating to 1899. As part of the Herding Group, the German Shepherd is a working dog...
. The White Shepherd breed was officially recognized by the United Kennel Club on April 14, 1999. It was awarded provisional recognition as a breed
Breed
A breed is a group of domestic animals or plants with a homogeneous appearance, behavior, and other characteristics that distinguish it from other animals or plants of the same species. Despite the centrality of the idea of "breeds" to animal husbandry, there is no scientifically accepted...
by the Fédération Cynologique Internationale
Fédération Cynologique Internationale
Fédération Cynologique Internationale is an international federation of kennel clubs based in Thuin, Belgium. The English language translation, World Canine Organisation, is not often used.Its goals are described in Article 2 of their regulations:...
on November 26, 2002 as the Berger Blanc Suisse
Berger Blanc Suisse
The White Shepherd Dog emerged from white coat lines of the German Shepherd Dog. The White Shepherd breed was officially recognized by the United Kennel Club on April 14, 1999. It was awarded provisional recognition as a breed by the Fédération Cynologique Internationale on November 26, 2002 as the...
. Provisional was changed to official recognition on July 5th, 2011 and the Berger Blanc Suisse breed is eligible for CACIB as of July 6th, 2011.
History
In German Shepherd Dogs the recessive gene for white coat hair was cast in the breed gene pool by the late 19th and early 20th century breeding program that developed and expanded the German Shepherd Dog breed in Germany. A white herding dog named Greif was the grandfather of Horand von Grafrath, the dog acknowledged as the foundation of all contemporary German Shepherd Dog bloodlines.Information provided in early books on the German Shepherd Dog make mention of Greif and other white German herding dogs, with upright ears and a general body description that resembles modern German Shepherd Dogs, shown in Europe as early as 1882. The early 20th century German Shepherd breeding program extensively line bred and inbred "color coat" dogs that carried Greif's recessive gene for "white coats" to refine and expand the population of early German Shepherd Dogs. White coats were made a disqualification in the German Shepherd Dog Club of Germany breed standard in 1933 after the breed club came under the control of the German Nazi party that took over all aspects of German society in February 1933 when Hitler declared a state of emergency
State of emergency
A state of emergency is a governmental declaration that may suspend some normal functions of the executive, legislative and judicial powers, alert citizens to change their normal behaviours, or order government agencies to implement emergency preparedness plans. It can also be used as a rationale...
. The German breed standard remained unchanged as German breeders repopulated the breed in the years after the conclusion of WWII.
During the 1970s, white dog fanciers in the United States and Canada formed their own "White German Shepherd" breed clubs, breeding and showing their dogs at small specialty dog shows throughout North America.
The White Shepherd Club of Canada (WSCC) has been dedicated to the promotion and preservation of the White Shepherd since 1971. Originally formed as a Chapter of the White German Shepherd Dog Club of America, the club was renamed White Shepherd Club of Canada in 1973. Its first conformation show was held that year with 8 dogs entered and 25 people in attendance.
In Canada, the Canadian Kennel Club (CKC) is incorporated under the Animal Pedigree Act, a federal statute under the auspices of the Ministry of Agriculture, which is the governing body that sets down recognition and standards for all pure animal breeds. For a long time, Agriculture Canada had protected white German Shepherds from the many attempts by the German Shepherd Dog Club of Canada to have white dogs disqualified from the CKC conformation ring, as had long been the case in the USA. Some brave members of WSCC had shown in the CKC breed rings and had even accumulated points toward their dogs' CKC Championships. Unfortunately, that would all change in 1998, when the color white was officially disqualified from the CKC German Shepherd breed standard.
Disappointed but undeterred, the WSCC continues to work toward full breed recognition of the White Shepherd as a separate breed with the CKC. The club hosts shows several times a year, often in combination with the American White Shepherd Association. Event dates and locations are published in the club's newsletter and on its web site.
In September 1995, a small group of fanciers of the white-coated German Shepherd Dog established the American White Shepherd Association (AWSA), a new club to advance, promote and protect the White Shepherd breed in the United States. In cooperation with the White Shepherd Club of Canada, AWSA wrote and published a new breed standard, and eventually petitioned the American Kennel Club for full recognition as a unique pure breed, separate from and independent of the German Shepherd Dog. As of this writing, AKC has not granted recognition or registration for the White Shepherd breed, but the breeders, fanciers and members of AWSA carry on with independently-held club activities as well as running and maintaining the private club registry. AWSA continues to negotiate with the AKC for breed recognition as well as with the German Shepherd Dog Club of America (GSDCA) for breed separation. Until such time as GSDCA can be persuaded to grant official release of the white dogs, AKC must continue to register all white German Shepherd Dogs born from two AKC-registered German Shepherd parents as German Shepherd Dogs.
Neither UKC nor AWSA-registered White Shepherds can be registered with FCI as White Swiss Shepherd Dogs (Berger Blanc Suisse). Breed clubs associated with each of these unique breed lines maintain their own breed standards for appearance and temperament. The breed "appearance" standard given below is appropriate to the UKC-registered White Shepherd Dog and, with a few very minor changes - mostly in wording and layout - to the written standard of the AWSA club as well.
No matter which country they hail from, White Shepherds excel in performance events such as competition obedience and rally obedience, tracking, flyball and agility. Many fine dogs have also earned titles in herding, proving that the herding instinct and ability has been retained in this versatile breed.
Appearance
The White Shepherd is a direct descendant of the German Shepherd Dog and the two breeds share common roots and are similar in appearance. However, the White Shepherd evolved from a continuous selection for a working companion dog with that exclusive color, beauty and elegance as seen both standing and in motion. His high degree of intelligence and sense of loyalty have allowed him to become one of the most versatile working dogs (as well as pets) known to man.The White Shepherd, as recognized by UKC, is a medium-sized, well-balanced, muscular dog, slightly longer than tall, with a medium length, pure white coat, erect ears, and a low-set natural tail that normally reaches to the hock and is carried in a slight curve like a saber. The White Shepherd is solid without bulkiness and should be shown in lean, hard physical condition. The outline of the White Shepherd is made up of smooth curves rather than angles. When trotting, the White Shepherd moves with a long, efficient stride that is driven by a powerful forward thrust from the hindquarters. The rear leg, moving forward, swings under the foreleg and touches down in the place where the forefoot left an imprint. Gender differences are readily apparent.
The White Shepherd should be evaluated as an all-around working dog, and exaggerations or faults should be penalized in proportion to how much they deviate from breed type; and how much they interfere with the dog's ability to work.
The head is proportional to the size of the dog. Males appear masculine without coarseness, and females feminine without being overly fine. The skull and muzzle are of equal length, parallel to one another, and joined at a moderate stop. There is little or no median furrow.
The White Shepherd has a weather-resistant double coat. The outer coat is dense, straight, harsh, and close lying. The undercoat is short, thick, and fine in texture. At the neck, the coat may be slightly longer and heavier, particularly in males. Ideal coat color is a pure white. Colors ranging from a very light cream to a light biscuit tan are acceptable but not preferred.
It is a disqualification for dogs to have noses not predominantly black.
The tail is set on low in a natural extension of the sloping croup. The tail extends at least to the hock joint and usually below.
The appearance standard for United Kennel Club registered dogs is very similar to but not exactly the same as for other separate breed lines such as the AWSA-registered White Shepherd or the FCI internationally recognized Berger Blanc Suisse (White Swiss Shepherd Dog). While all of the existing breed lines have a common genetic heritage with the white-coated members of the German Shepherd Dog breed, they are each separately registered with their respective clubs or registries which also maintain the individual breed appearance standards.
Temperament
The White Shepherd has a distinct personality marked by self-confidence. The breed is poised, but when the situation demands, it is eager, alert and ready to serve in any capacity. White Shepherds demonstrate both herding and protective instincts. With those he knows, the White Shepherd is open and friendly. With strangers, he is observant and may be somewhat aloof but not apprehensive. They enjoy running, playing fetch or any activity with their human family. This is a joyful, active, intelligent and easy to train working dog with the ability to adapt and integrate to all kinds of social events and situations.Timidity in a mature dog or aggressive behavior is not typical of this breed.White Shepherds are very loyal and tend to be especially protective of the young of various species. With their playful and curious personalities, they make wonderful companions although some do have the tendency toward being quite vocal by exhibiting whining, grunting, and moaning.
Activities
The White Shepherd can compete in dog agilityDog agility
Dog agility is a dog sport in which a handler directs a dog through an obstacle course in a race for both time and accuracy. Dogs run off-leash with no food or toys as incentives, and the handler can touch neither dog nor obstacles...
trials, obedience
Obedience training
Obedience training usually refers to the training of a dog and the term is most commonly used in that context. Obedience training ranges from very basic training, such as teaching the dog to reliably respond to basic commands such as "sit", "down", "come", and "stay", to high level competition...
, Rally obedience
Rally obedience
Rally obedience is a dog sport based on obedience. It was originally devised by Charles L. "Bud" Kramer from the obedience practice of "doodling" - doing a variety of interesting warmup and freestyle exercises....
, Schutzhund
Schutzhund
Schutzhund is a dog sport that was developed in Germany in the early 1900s as a breed suitability test for the German Shepherd Dog. The test would determine if the dog displayed the appropriate traits and characteristics of a proper working German Shepherd Dog...
, showmanship
Dog showmanship
Dog showmanship is a set of skills and etiquette used by handlers of dogs in a dog competition. Dog showmanship is not a competition in itself but a qualification of the handler to present a dog to its best advantage. Skills are technical as well as artistic...
, flyball
Flyball
Flyball is a dog sport in which teams of dogs race against each other from a start/finish line, over a line of hurdles, to a box that releases a tennis ball to be caught when the dog presses the spring-loaded pad, then back to their handlers while carrying the ball.Flyball is run in teams of four...
, tracking
Tracking (dog)
Tracking is a technique in which dogs are trained to locate certain objects, such as a downed bird, using the object's scent. Many bird and rabbit hunters train their dogs in tracking. The scent hounds are generally regarded as having the best tracking abilities among all dog breeds.In dog sports,...
, and herding
Herding
Herding is the act of bringing individual animals together into a group , maintaining the group and moving the group from place to place—or any combination of those. While the layperson uses the term "herding", most individuals involved in the process term it mustering, "working stock" or...
events. Herding
Herding
Herding is the act of bringing individual animals together into a group , maintaining the group and moving the group from place to place—or any combination of those. While the layperson uses the term "herding", most individuals involved in the process term it mustering, "working stock" or...
instincts and trainability can be measured at noncompetitive herding tests. White Shepherds that exhibit basic herding instincts can be trained to compete in herding trials.
Genetics
There are many misconceptions about white-coat German Shepherd Dogs and the gene that expresses for their coat color. Clarence C. Little's The Inheritance of Coat Color in Dogs hypothesized that dilution or partial albinismAlbinism
Albinism is a congenital disorder characterized by the complete or partial absence of pigment in the skin, hair and eyes due to absence or defect of an enzyme involved in the production of melanin...
ce, ca and cch allele
Allele
An allele is one of two or more forms of a gene or a genetic locus . "Allel" is an abbreviation of allelomorph. Sometimes, different alleles can result in different observable phenotypic traits, such as different pigmentation...
s of the so called (C) gene caused the cream and white coat color variants in domestic dogs. Little's hypothesized partial albinism explanation for cream and white colored coats has been applied across most domestic dog breeds, including white coat dogs from German Shepherd breed lines, since Little first published his book.
DNA
Deoxyribonucleic acid is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms . The DNA segments that carry this genetic information are called genes, but other DNA sequences have structural purposes, or are involved in...
sequences now shows that Little's hypothesized gene (C) color dilution explanation for cream and white colored coats is most likely not a relevant determinant of cream and white coats known to commonly occur in many dog breeds. Little's 1957-era partial albinism dilution explanation, as applied to explain domestic dog white and cream coat colors, can be replaced by the findings of modern genetic research.
Research has shown that a recessive e allele at the Extension (E) gene is at least partially responsible for cream and white coat color. The (E) gene, now identified as the Melanocortin 1 receptor
Melanocortin 1 receptor
The melanocortin 1 receptor , also known as melanocyte-stimulating hormone receptor , melanin-activating peptide receptor, or melanotropin receptor, is a G protein-coupled receptor which binds to a class of pituitary peptide hormones known as the melanocortins, of which include adrenocorticotropic...
(MC1R) gene, is one of the two genes known to code for alleles that are absolutely fundamental to the formation of all German Shepherd Dog colored coat variations. When the recessive allele is inherited from each breeding pair parent, the e/e genotype
Genotype
The genotype is the genetic makeup of a cell, an organism, or an individual usually with reference to a specific character under consideration...
offspring of certain breeds, including white coat dogs from German Shepherd breed lines, always have cream or white colored coats.
White Shepherds were once blamed for color dilution or paling for the entire breed because the recessive e allele of the MC1R (E) gene locus masks expression of alleles at other gene loci that actually do code for lighter (often termed as diluted or pale) colors of silver, black and tan or liver. German breeders of the 1920s and 1930s misinterpreted pale-colored offspring of white dogs as an undesirable "white" genetic trait. A homozygous dog of normal color paired with a white GSD always produces full colored puppies because the e allele is recessive.
In popular culture
- In the 2008 Disney animated film Bolt, the design of the main characterBolt (character)Bolt is a white American Shepherd Dog and the protagonist from the 2008 animated feature of the same name. His character development embodies the film’s main messages regarding trust and loyalty....
is heavily inspired by the White Shepherd Dog. - In the survival horror video game Haunting GroundHaunting GroundHaunting Ground, known as in Japan, is a survival horror video game developed and published by Capcom for the PlayStation 2 console in 2005. The game shares many similarities with Clock Tower 3.-Gameplay:...
("Demento" in Japan), one of the main characters is a White Shepherd named Hewie.
- In the 1993 motion picture "Amos and Andrew" featured a white shepherd named Rommell, played by Rambo.
- The 1987 motion picture The Lost BoysThe Lost BoysThe Lost Boys is a 1987 American teen comedy horror film directed by Joel Schumacher and starring Jason Patric, Corey Haim, Kiefer Sutherland, Jami Gertz, Corey Feldman, Dianne Wiest, Edward Herrmann, Alex Winter, Jamison Newlander, and Barnard Hughes....
features a White Shepherd called Thorn, owned by the character Max. - Samuel Fuller's acclaimed 1982 motion picture White DogWhite DogWhite Dog is a 1982 American drama film directed by Samuel Fuller using a screenplay written by Fuller and Curtis Hanson loosely based on Romain Gary's 1970 novel of the same title...
features a White Shepherd that has been trained to attack and kill people with black skin. - Jack LaLanne, popular fitness "guru" had white shepherd dogs that appeared on his TV show.
- Fantasy author Neil GaimanNeil GaimanNeil Richard Gaiman born 10 November 1960)is an English author of short fiction, novels, comic books, graphic novels, audio theatre and films. His notable works include the comic book series The Sandman and novels Stardust, American Gods, Coraline, and The Graveyard Book...
has two white German Shepherds, Cabal and Lola. - Jennifer AnistonJennifer AnistonJennifer Joanna Aniston is an American actress, film director, and producer, best known for her role as Rachel Green on the television sitcom Friends, a role which earned her an Emmy Award, a Golden Globe Award, and a Screen Actors Guild Award.Aniston has also enjoyed a successful film career,...
has a white shepherd called Dolly. - Pop singer and actress Miley CyrusMiley CyrusMiley Ray Cyrus is an American actress and pop singer-songwriter. She achieved wide fame for her role as Miley Stewart/Hannah Montana on the Disney Channel sitcom Hannah Montana....
has a white shepherd named Mate (note that she also appeared in Bolt as the owner of the title character). - Carolyn Perry also has a White German Shepherd with the French name of Gigi
- In Jonathan Maberry'sJonathan MaberryJonathan Maberry is the multiple Bram Stoker Award-winning author of Ghost Road Blues, the first of the Pine Deep Trilogy, a series of supernatural horror novels...
book, The King of Plagues, Joe Ledger's dog, Ghost, is a White Shepherd Dog.
- The 1987 motion picture The Lost Boys