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The English Greyhound, or simply the Greyhound, is a breed of
dog The dog (''Canis familiaris'' or ''Canis lupus familiaris'') is a domesticated descendant of the wolf. Also called the domestic dog, it is derived from the extinct Pleistocene wolf, and the modern wolf is the dog's nearest living relative. Do ...
, a sighthound which has been bred for
coursing Coursing by humans is the pursuit of game or other animals by dogs—chiefly greyhounds and other sighthounds—catching their prey by speed, running by sight, but not by scent. Coursing was a common hunting technique, practised by the nobility, ...
, greyhound racing and hunting. Since the rise in large-scale adoption of retired racing Greyhounds, the breed has seen a resurgence in popularity as a family pet. Greyhounds are defined as a tall, muscular, smooth-coated, "S-shaped" type of sighthound with a long tail and tough feet. Greyhounds are a separate breed from other related sighthounds, such as the
Italian greyhound The Italian Greyhound ( it, Piccolo levriero Italiano, italic=no) is an Italian breed of small sighthound. It may also be called the Italian Sighthound. History Small dogs of sighthound type have long been popular with nobility and royalty. ...
. The Greyhound is a gentle and intelligent breed whose combination of long, powerful legs, deep chest, flexible spine, and slim build allows it to reach average race speeds exceeding . The Greyhound can reach a full speed of within , or six strides from the boxes, traveling at almost for the first of a race.


Appearance

Males are usually tall at the
withers The withers is the ridge between the shoulder blades of an animal, typically a quadruped. In many species, it is the tallest point of the body. In horses and dogs, it is the standard place to measure the animal's height. In contrast, cattle a ...
, and weigh on average . Females tend to be smaller, with shoulder heights ranging from and weights from , although weights can be above and below these average weights. Greyhounds have very short fur, which is easy to maintain. There are approximately 30 recognized color forms, of which variations of white, brindle, fawn (pale tan to dark deer-red), black, red, and blue (gray) can appear uniquely or in combination. Greyhounds are
dolichocephalic Dolichocephaly (derived from the Ancient Greek δολιχός 'long' and κεφαλή 'head') is a condition where the head is longer than would be expected, relative to its width. In humans, scaphocephaly is a form of dolichocephaly. Dolichoce ...
, with a skull which is relatively long in comparison to its breadth, and an elongated muzzle.


Pets

Greyhounds are considered to make good pets, and are known for their loving nature and enjoyment of the company of humans or other dogs, though how well a Greyhound tolerates the company of other small animals such as cats depends on the individual dog's personality. Greyhounds will typically chase small animals; those lacking a high 'prey drive' will be able to coexist happily with toy dog breeds and cats. Greyhounds live most happily as pets in quiet environments. They do well in families with children, as long as the children are taught to treat the dog properly with politeness and appropriate respect. Greyhounds have a sensitive nature, and gentle commands work best as training methods. Occasionally, a Greyhound may bark; however, they are generally not barkers, which is beneficial in suburban environments, and they are usually as friendly to strangers as they are with their own families. A 2008
University of Pennsylvania The University of Pennsylvania (also known as Penn or UPenn) is a private research university in Philadelphia. It is the fourth-oldest institution of higher education in the United States and is ranked among the highest-regarded universitie ...
study found that Greyhounds are one of the least aggressive dog breeds towards strangers, owners, and other dogs. A common misconception regarding Greyhounds is that they are hyperactive. This is usually not the case with retired racing Greyhounds. Greyhounds can live comfortably as apartment dogs, as they do not require much space and sleep almost 18 hours per day. Due to their calm temperament, Greyhounds can make better "apartment dogs" than smaller, more active breeds. Many
Greyhound adoption Greyhound adoption or Greyhound rescue programs focus on finding homes for Greyhounds who are no longer needed for racing. In some countries they live in kennels at the track. Currently, most Greyhound adoption programs are based in the United ...
groups recommend that owners keep their Greyhounds on a leash whenever outdoors, except in fully enclosed areas. This is due to their prey drive, their speed, and the assertion that Greyhounds have no road sense. In some jurisdictions, it is illegal for Greyhounds to be allowed off leash, even in off-leash dog parks. Due to their size and strength, adoption groups recommend that fences be between tall, to prevent Greyhounds from jumping over them. As with most breeds being rehomed, Greyhounds that are adopted after racing tend to need time to adjust to their new lives with a human family. Many guides and books have been published to aid Greyhound owners in helping their pet get comfortable in their new home.


Abilities


Coursing

The original primary use of Greyhounds, both in the British Isles and on the Continent of Europe, was in the coursing of deer for meat and sport; later, specifically in Britain, they specialized in competition
hare coursing Hare coursing is the pursuit of hares with greyhounds and other sighthounds, which chase the hare by sight, not by scent. In some countries, it is a legal, competitive activity in which dogs are tested on their ability to run, overtake and turn ...
. Some Greyhounds are still used for coursing, although artificial lure sports like
lure coursing Lure coursing is a sport for dogs that involves chasing a mechanically operated lure. Competition is typically limited to dogs of purebred sighthound breeds. The AKC has a pass/fail trial for all breeds called the Coursing Ability Test (CAT) a ...
and racing are far more common and popular. Many leading 300- to 550-yard sprinters have bloodlines traceable back through Irish sires, within a few generations of racers that won events such as the Irish Coursing Derby or the Irish Cup.


Racing

Until the early 20th century, Greyhounds were principally bred and trained for hunting and
coursing Coursing by humans is the pursuit of game or other animals by dogs—chiefly greyhounds and other sighthounds—catching their prey by speed, running by sight, but not by scent. Coursing was a common hunting technique, practised by the nobility, ...
. During the 1920s, modern greyhound racing was introduced into the United States, England (1926), Northern Ireland (1927), Scotland (1927), and the Republic of Ireland (1927). Australia also has a significant racing culture. In the United States, aside from professional racing, many Greyhounds enjoy success on the amateur race track. Organizations like the Large Gazehound Racing Association (LGRA) and the National Oval Track Racing Association (NOTRA) provide opportunities for Greyhounds to compete.


Companion

Historically, the Greyhound has, since its first appearance as a hunting type and breed, enjoyed a specific degree of fame and definition in Western literature, heraldry and art as the most elegant or noble companion and hunter of the canine world. In modern times, the professional racing industry, with its large numbers of track-bred greyhounds, as well as international adoption programs aimed at re-homing dogs has redefined the breed as a sporting dog that will supply friendly companionship in its retirement. This has been prevalent in recent years due to track closures in the United States. Outside the racing industry and coursing community, the Kennel Clubs' registered breed still enjoys a modest following as a show dog and pet.


Health and physiology

Greyhounds are typically a healthy and long-lived breed, and hereditary illness is rare. Some Greyhounds have been known to develop
esophageal achalasia Esophageal achalasia, often referred to simply as achalasia, is a failure of smooth muscle fibers to relax, which can cause the lower esophageal sphincter to remain closed. Without a modifier, "achalasia" usually refers to achalasia of the esopha ...
,
gastric dilatation volvulus Gastric dilatation volvulus (GDV), also known as gastric dilation, twisted stomach, or gastric torsion, is a medical condition that affects dogs in which the stomach becomes overstretched and rotated by excessive gas content. The word bloat is o ...
(also known as bloat), and
osteosarcoma An osteosarcoma (OS) or osteogenic sarcoma (OGS) (or simply bone cancer) is a cancerous tumor in a bone. Specifically, it is an aggressive malignant neoplasm that arises from primitive transformed cells of mesenchymal origin (and thus a sarcoma ...
. Because the Greyhound's lean physique makes it ill-suited to sleeping on hard surfaces, owners of both racing and companion Greyhounds generally provide soft bedding; without bedding, Greyhounds are prone to develop painful skin sores. The average lifespan of a Greyhound is 10 to 14 years. Due to the Greyhound's unique physiology and anatomy, a veterinarian who understands the issues relevant to the breed is generally needed when the dogs need treatment, particularly when anesthesia is required. Greyhounds cannot metabolize barbiturate-based anesthesia in the same way that other breeds can because their
liver The liver is a major organ only found in vertebrates which performs many essential biological functions such as detoxification of the organism, and the synthesis of proteins and biochemicals necessary for digestion and growth. In humans, it ...
s have lower amounts of
oxidative enzyme An oxidative enzyme is an enzyme that catalyses an oxidation reaction. Two most common types of oxidative enzymes are peroxidases, which use hydrogen peroxide, and oxidases, which use molecular oxygen. They increase the rate at which ATP is pro ...
s. Greyhounds demonstrate unusual blood chemistr

which can be misread by veterinarians not familiar with the breed and can result in an incorrect diagnosis. Greyhounds are very sensitive to insecticides. Many vets do not recommend the use of
flea collar An animal collar is a device that attaches to the neck of an animal to allow it to be harnessed or restrained. Types of collars Pet collar A piece of material put around the neck of certain pet animals, such as dogs, cats, or pigs, for co ...
s or flea spray on Greyhounds if the product is
pyrethrin The pyrethrins are a class of organic compounds normally derived from '' Chrysanthemum cinerariifolium'' that have potent insecticidal activity by targeting the nervous systems of insects. Pyrethrin naturally occurs in chrysanthemum flowers and i ...
-based. Products like Advantage, Frontline, Lufenuron, and
Amitraz Amitraz (development code BTS27419) is a non-systemic acaricide and insecticideCorta, E., Bakkali, A., Berrueta, L. A., Gallo, B., & Vicente, F. (1999). Kinetics and mechanism of amitraz hydrolysis in aqueous media by HPLC and GC-MS. Talanta, 48(1 ...
are safe for use on Greyhounds, however, and are very effective in controlling fleas and
tick Ticks (order Ixodida) are parasitic arachnids that are part of the mite superorder Parasitiformes. Adult ticks are approximately 3 to 5 mm in length depending on age, sex, species, and "fullness". Ticks are external parasites, living by ...
s. Greyhounds have higher levels of
red blood cell Red blood cells (RBCs), also referred to as red cells, red blood corpuscles (in humans or other animals not having nucleus in red blood cells), haematids, erythroid cells or erythrocytes (from Greek ''erythros'' for "red" and ''kytos'' for "holl ...
s than other breeds. Since red blood cells carry oxygen to the muscles, this higher level allows the hound to move larger quantities of oxygen faster from the lungs to the muscles. Conversely, Greyhounds have lower levels of platelets than other breeds. Delayed
haemorrhage Bleeding, hemorrhage, haemorrhage or blood loss, is blood escaping from the circulatory system from damaged blood vessels. Bleeding can occur internally, or externally either through a natural opening such as the mouth, nose, ear, urethra, v ...
following trauma or routine surgery is more common in Greyhounds, with one study reporting significant haemorrhage in 26% of Greyhounds following routine
gonadectomy Castration is any action, surgical, chemical, or otherwise, by which an individual loses use of the testicles: the male gonad. Surgical castration is bilateral orchiectomy (excision of both testicles), while chemical castration uses pharmaceu ...
, compared to 0-2% in other dog breeds. This is often termed greyhound fibrinolytic syndrome or breed-associated hyperfibrinolysis, where in there is a disorder of the
fibrinolysis system Fibrinolysis is a process that prevents blood clots from growing and becoming problematic. Primary fibrinolysis is a normal body process, while secondary fibrinolysis is the breakdown of clots due to a medicine, a medical disorder, or some other c ...
without derangement of the primary or secondary coagulation systems, and is also not related to
platelet Platelets, also called thrombocytes (from Greek θρόμβος, "clot" and κύτος, "cell"), are a component of blood whose function (along with the coagulation factors) is to react to bleeding from blood vessel injury by clumping, thereby i ...
count. In this syndrome there is initial adequate
hemostasis In biology, hemostasis or haemostasis is a process to prevent and stop bleeding, meaning to keep blood within a damaged blood vessel (the opposite of hemostasis is hemorrhage). It is the first stage of wound healing. This involves coagulation, ...
following trauma or routine surgical procedures, however 36–48 hours later the site undergoes inappropriate hyperfibrinolysis. This results in delayed bleeding which can result in significant morbidity and mortality. Standard pre-operative blood work does not identify those at risk It is distinct from common bleeding disorders in other breeds such
von Willebrand's disease Von Willebrand disease (VWD) is the most common hereditary blood-clotting disorder in humans. An acquired form can sometimes result from other medical conditions. It arises from a deficiency in the quality or quantity of von Willebrand factor ...
, which is uncommon in Greyhounds. Although high-quality research data are lacking, it is thought that this condition can be prevented and treated by administering antifibrinolytic medication such as
tranexamic acid Tranexamic acid (TXA) is a medication used to treat or prevent excessive blood loss from major trauma, postpartum bleeding, surgery, tooth removal, nosebleeds, and heavy menstruation. It is also used for hereditary angioedema. It is taken eit ...
via the oral or
parenteral A route of administration in pharmacology and toxicology is the way by which a drug, fluid, poison, or other substance is taken into the body. Routes of administration are generally classified by the location at which the substance is applied. ...
route. Intensive care and blood product administration may also be required in severe cases. Greyhounds do not have undercoats and thus are less likely to trigger dog allergies in humans (they are sometimes incorrectly referred to as "
hypoallergenic Hypoallergenic, meaning "below average" or "slightly" allergenic, is a term meaning that something (usually cosmetics, pets, textiles, food, etc.) causes fewer allergic reactions. The term was first used in 1953 in an advertising campaign for cos ...
"). The lack of an undercoat, coupled with a general lack of body fat, also makes Greyhounds more susceptible to extreme temperatures (both hot and cold); because of this, they must be housed inside. Some Greyhounds are susceptible to corns on their paw pads; a variety of methods are used to treat the

The key to the speed of a Greyhound can be found in its light but muscular build, large
heart The heart is a muscular organ in most animals. This organ pumps blood through the blood vessels of the circulatory system. The pumped blood carries oxygen and nutrients to the body, while carrying metabolic waste such as carbon dioxide to t ...
, highest percentage of
fast twitch muscle Skeletal muscles (commonly referred to as muscles) are organs of the vertebrate muscular system and typically are attached by tendons to bones of a skeleton. The muscle cells of skeletal muscles are much longer than in the other types of muscle ...
of any breed, double suspension gallop, and extreme flexibility of its spine. "Double suspension rotary gallop" describes the fastest running gait of the Greyhound in which all four feet are free from the ground in two phases, contracted and extended, during each full stride.


History


Origins

The ancient skeletal remains of a dog identified as being of the greyhound/saluki form were excavated at
Tell Brak Tell Brak (Nagar, Nawar) was an ancient city in Syria; its remains constitute a tell located in the Upper Khabur region, near the modern village of Tell Brak, 50 kilometers north-east of Al-Hasaka city, Al-Hasakah Governorate. The city' ...
in modern Syria, and dated as being approximately 4,000 years old. Historical literature by Arrian on the vertragus (from the
Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...
, a word of Celtic origin), the first recorded sighthound in Europe and possible antecedent of the Greyhound, suggested that its origin lies with the Celts from Eastern Europe or Eurasia. Systematic archaeozoology of Britain conducted in 1974 ruled out the existence of a true greyhound-type in Britain prior to the Roman occupation, which was further confirmed in 2000. Written evidence from the early period of Roman occupation, the
Vindolanda tablets The Vindolanda tablets were, at the time of their discovery, the oldest surviving handwritten documents in Britain (they have since been antedated by the Bloomberg tablets). They are a rich source of information about life on the northern fro ...
(No. 594), demonstrate that the occupying troops from Continental Europe either had with them in the North of England, or certainly knew of, the vertragus and its hunting use. An archaeological find at the
Chotěbuz ( pl, , german: Kotzobendz) is a municipality and village in the Karviná District in the Moravian-Silesian Region of the Czech Republic. It has about 1,400 inhabitants. Polish minority makes up 17.0% of the population. Etymology The name of C ...
fort in the Czech Republic of sighthound type, "gracile" bones dating from the 8th to 9th century CE, anatomically defined as those of a high "greyhound", were also genetically compared with the modern Greyhound and other sighthounds, and found to be almost completely identical with the modern Greyhound breed, with the exception of only four deletions and one substitution in the DNA sequences, which were interpreted as differences probably arising from 11 centuries of breeding of this type of dog. All modern pedigree Greyhounds derive from the Greyhound stock recorded and registered first in private studbooks in the 18th century, then in public studbooks in the 19th century, which ultimately were registered with coursing, racing, and kennel club authorities of the United Kingdom. Historically, these sighthounds were used primarily for hunting in the open where their pursuit speed and keen
eyesight Visual perception is the ability to interpret the surrounding environment through photopic vision (daytime vision), color vision, scotopic vision (night vision), and mesopic vision (twilight vision), using light in the visible spectrum reflect ...
were essential.


Etymology

The name "Greyhound" is generally believed to come from the
Old English Old English (, ), or Anglo-Saxon, is the earliest recorded form of the English language, spoken in England and southern and eastern Scotland in the early Middle Ages. It was brought to Great Britain by Anglo-Saxon settlers in the mid-5th c ...
. is the antecedent of the modern "hound", but the meaning of is undetermined, other than in reference to dogs in Old English and
Old Norse Old Norse, Old Nordic, or Old Scandinavian, is a stage of development of North Germanic dialects before their final divergence into separate Nordic languages. Old Norse was spoken by inhabitants of Scandinavia and their overseas settlemen ...
. The word "hund" is still used for dogs in general in
Scandinavian languages The North Germanic languages make up one of the three branches of the Germanic languages—a sub-family of the Indo-European languages—along with the West Germanic languages and the extinct East Germanic languages. The language group is also r ...
today. Its origin does not appear to have any common root with the modern word "grey" for color, and indeed the Greyhound is seen with a wide variety of coat colors. The lighter colors, patch-like markings and white appeared in the breed that was once ordinarily grey in color. The Greyhound is the only dog mentioned by name in the
Bible The Bible (from Koine Greek , , 'the books') is a collection of religious texts or scriptures that are held to be sacred in Christianity, Judaism, Samaritanism, and many other religions. The Bible is an anthologya compilation of texts ...
; many versions, including the
King James Version The King James Version (KJV), also the King James Bible (KJB) and the Authorized Version, is an Bible translations into English, English translation of the Christian Bible for the Church of England, which was commissioned in 1604 and publis ...
, name the Greyhound as one of the "four things stately" in . However, some newer biblical translations, including the New International Version, have changed this to 'strutting rooster', which appears to be an alternative translation of the
Hebrew Hebrew (; ; ) is a Northwest Semitic language of the Afroasiatic language family. Historically, it is one of the spoken languages of the Israelites and their longest-surviving descendants, the Jews and Samaritans. It was largely preserved ...
term . However, the
Douay–Rheims Bible The Douay–Rheims Bible (, ), also known as the Douay–Rheims Version, Rheims–Douai Bible or Douai Bible, and abbreviated as D–R, DRB, and DRV, is a translation of the Bible from the Latin Vulgate into English made by member ...
translation from the late 4th-century Latin
Vulgate The Vulgate (; also called (Bible in common tongue), ) is a late-4th-century Latin translation of the Bible. The Vulgate is largely the work of Jerome who, in 382, had been commissioned by Pope Damasus I to revise the Gospels u ...
into English translates this term as "a cock." According to Pokorny,Pokorny, ''Indogermanisches Woerterbuch'', pp. 441–442. the English term 'Greyhound' does not mean "grey dog/hound", but simply "fair dog". Subsequent words have been derived from the
Proto-Indo-European root The roots of the reconstructed Proto-Indo-European language (PIE) are basic parts of words that carry a lexical meaning, so-called morphemes. PIE roots usually have verbal meaning like "to eat" or "to run". Roots never occurred alone in the lan ...
*g'her- "shine, twinkle": English 'grey',
Old High German Old High German (OHG; german: Althochdeutsch (Ahd.)) is the earliest stage of the German language, conventionally covering the period from around 750 to 1050. There is no standardised or supra-regional form of German at this period, and Old High ...
"grey, old", Old Icelandic "piglet, pig", Old Icelandic "to dawn", "morning twilight",
Old Irish Old Irish, also called Old Gaelic ( sga, Goídelc, Ogham script: ᚌᚑᚔᚇᚓᚂᚉ; ga, Sean-Ghaeilge; gd, Seann-Ghàidhlig; gv, Shenn Yernish or ), is the oldest form of the Goidelic/Gaelic language for which there are extensive writt ...
"sun", Old Church Slavonic "morning twilight, brightness". The common sense of these words is "to shine; bright." In 1928, the first winner of Best in Show at
Crufts Crufts is an international dog show held annually in the United Kingdom, first held in 1891. Organised and hosted by The Kennel Club, it is the largest show of its kind in the world. Crufts is centred on a championship conformation show for do ...
was breeder/owner Mr. H. Whitley's Greyhound ''Primley Sceptre''. Greyhounds have won the award three times in total, the most recent being in 1956. Historically, English Greyhounds were grouped: two for coursing, as a "Brace", three for hunting, as a "Leash", otherwise known as a "couple and a half".''Turbervile's Booke of Hunting 1576'' Clarendon Press 1908 p242


See also

* Dogs portal * List of dog breeds * Afghan Hound *
Azawakh The Azawakh is a breed of dog from West Africa. With ancient origins, it is raised throughout the Sahelian zone of Mali, Niger, and Burkina Faso. This region includes the Azawagh Valley for which the breed is named. While commonly assoc ...
*
Borzoi The Borzoi or Russian Hunting Sighthound is a Russian breed of hunting dog of sighthound type. It was formerly used for wolf hunting, and until 1936 was known as the Russian Wolfhound. Etymology The system by which Russians over the ages n ...
(formerly known as Russian Wolfhound) * Combai * Chippiparai * Fastest animal *
Galgo Español The Galgo Español ('Spanish galgo') or Spanish Greyhound is an ancient breed of dog, specifically a member of the sighthound family. The English greyhound is possibly a descendant of the Spanish greyhound and, for several years in the 20th ce ...
(Spanish Greyhound) *
Hortaya borzaya The Chortai, sometimes spelt Chortaj, is a breed of sighthound from Ukraine. The Chortai is said to resemble a cross between a Greyhound and a short haired Borzoi, being a quite heavily built running hound but nevertheless displaying typical sight ...
(Russian shorthaired sighthound) * Irish Wolfhound *
Italian Greyhound The Italian Greyhound ( it, Piccolo levriero Italiano, italic=no) is an Italian breed of small sighthound. It may also be called the Italian Sighthound. History Small dogs of sighthound type have long been popular with nobility and royalty. ...
*
Kanni The Kanni (கன்னி), meaning pure (also known as the Maiden's Beastmaster), is a rare indigenous South Indian sighthound breed of dog found in the state of Tamil Nadu. Their native breeding tract is located around villages in the Ti ...
*
Longdog A long dog (also long-dog or longdog) is any dog of sighthound type, whether pure-bred or not. It is usually a cross-breed between two sighthounds of different breeds, one of which is usually a Greyhound It is distinct from the lurcher, which ...
(cross between two sighthound breeds) *
Lurcher A lurcher is a cross-bred dog resulting from mating a Greyhound or other sighthound with a dog of another type, commonly a herding dog or a terrier. The lurcher was for hundreds of years strongly associated with poaching; in modern times it ...
(sighthound ancestry) * Magyar agár (Hungarian Greyhound) * Mudhol Hound * Polish Greyhound *
Rajapalayam Rajapalayam () is a City in the Indian state of Tamil Nadu. It is the largest municipality in the Virudhunagar district. Rajapalayam is located in the Madurai to Quilon National Highway at a distance of 562 km south to the state capita ...
(India) * Rampur Greyhound * Saluki *
Scottish Deerhound The Scottish Deerhound, or simply the Deerhound, is a large breed of sighthound, once bred to hunt the red deer by coursing. In outward appearance, the Scottish Deerhound is similar to the Greyhound, but larger and more heavily boned with a rough-c ...
* Sloughi *
Whippet The Whippet is a dog breed of medium size. It is a sighthound breed that originated in England, descended from the Greyhound. Whippets today still strongly resemble a smaller Greyhound. Part of the hound group, Whippets have relatively few ...


References


Further reading


"The Greyhound in 1864: ..." Walsh 1864"The Greyhound, ..." Dalziel 1887''Of Greyhounds and of Their Nature'', Chapter XV: "The Master of Game", Edward of York circa 1406"The Greyhound" Roger D. Williams, in ''The American Book of the Dog'' Editor George O. Shields. Chicago: Rand Mcnally, 1891
* ''Greyhound Nation: A Coevolutionary History of England, 1200–1900''. Edmund Russell, Cambridge University Press, 2018. * ''The Greyhound and the Hare: A History of the Breed and the Sport''. Charles Blanning, The National Coursing Club, 2018.


External links

* {{Authority control Dog breeds originating in the United Kingdom FCI breeds Greyhound racing Sighthounds Vulnerable Native Breeds