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81-641: The Bulldog is a British breed of dog of mastiff type. It may also be known as the English Bulldog or British Bulldog . It is a medium-sized, muscular dog of around 40–55 lb (18–25 kg). They have large heads with thick folds of skin around the face and shoulders and a relatively flat face with a protruding lower jaw. The breed has significant health issues as a consequence of breeding for its distinctive appearance, including brachycephaly , hip dysplasia , heat sensitivity, and skin infections. Due to concerns about their quality of life, breeding Bulldogs

162-456: A breed standard which is a written description of the ideal specimen of the breed. Other uses of the term breed when referring to dogs include pure breeds , cross-breeds , mixed breeds and natural breeds . Prior to the standardization of dog breeds, there were many different types of dogs that were defined by their own, unique functions. Many different terms were used to describe dogs, such as breed, strain, type, kind, and variety. By

243-457: A lncRNA variant in the IGF1 region arisen in wolves from northern latitudes c. 53.000 years ago and fixed by natural and subsequently by human selection. Their behavioral traits include guarding, herding, and hunting, retrieving, and scent detection. Their personality traits include hypersocial behavior, boldness, and aggression, which demonstrates the functional and behavioral diversity of dogs. As

324-456: A "school" book about hawking , hunting, fishing, and heraldry , attributed to Juliana Berners (Barnes), lists dogs of the time mainly by function: "First there is a greyhound, a bastard, a mongrel , a mastiff, a limer, a spaniel, " raches " (small-to-medium-sized scenthounds), "kennets" (small hunting dogs), terriers , "butcher's hounds", dung-heap dogs, "trundel tails" ( lapdogs ?) and prick-eared curs , and small ladies puppies that bear away

405-450: A 0.46 kg (1.0 lb) teacup poodle to a 90 kg (200 lb) giant mastiff . The skull, body, and limb proportions vary significantly between breeds, with dogs displaying more phenotypic diversity than can be found within the entire order of carnivores. These breeds possess distinct traits related to morphology, which include body size, skull shape, tail phenotype, fur type and colour. The difference in size has been attributed to

486-570: A 2010 study ( Afghan Hound , Akita , Alaskan Malamute , American Eskimo , Basenji , Canaan dog , Chow Chow , Dingo , New Guinea singing dog , Saluki , Samoyed , Shar-Pei , Siberian Husky ), plus another three: the Eurasier , Finnish Spitz and Shiba Inu . The study referred to these 16 as basal breeds, as opposed to ancient breeds, as they exhibited genetic divergence but not all of them were historically considered to be "ancient breeds". The 2012 study found that modern breeds only emerged in

567-761: A coiled "corkscrew" into a tail pocket. In the United Kingdom, the breed standards are 55 lb (25 kg) for a male and 50 lb (23 kg) for a female. In the United States, the standard calls for a smaller dog — a typical mature male weighs 50 lb (23 kg), while mature females weigh about 40 lb (18 kg). According to the American Kennel Club (AKC), a Bulldog's disposition should be "equable and kind, resolute, and courageous (not vicious or aggressive), and demeanour should be pacifist and dignified. These attributes should be countenanced by

648-399: A combined surgical/orthodontic treatment, where most of the time a mandibular advancement is performed. The same can be said for mandibular prognathism. On average, Neanderthals were far more prognathic than modern humans regarding the maxilla. This maxillary prognathism, along with their wide noses, suggests that their faces were not adapted to cold climate. Mandibular prognathism is

729-641: A known foundation stock may still not be recognized by some clubs as breeds. For instance, the feist is a hunting dog raised in the Southern United States for hunting small game. Feists have a consistent set of characteristics that reliably differentiate them from other dog types and breeds. However, the United Kennel Club recognizes one breed of feist, the Treeing Feist , while the American Kennel Club does not recognize any feist breed. A dog

810-684: A longstanding association with British culture ; the BBC wrote: "To many the Bulldog is a national icon, symbolising pluck and determination". During the Second World War , the Prime Minister Winston Churchill was likened to a Bulldog for his defiance of Nazi Germany . Dog breed A dog breed is a particular type of dog that was purposefully bred by humans to perform specific tasks, such as herding, hunting, and guarding. Dogs are

891-408: A mix of two breeds and is not the result of intentional breeding . In the United States, the term mixed-breed is a favored synonym over mongrel among individuals who wish to avoid negative connotations associated with the latter term. The implication that such dogs must be a mix of defined breeds may stem from an inverted understanding of the origins of dog breeds. Purebred dogs have been, for

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972-426: A part of a citywide roundup effort led by Governor Richard Nicolls . Because cornering and leading wild bulls was dangerous, Bulldogs were trained to seize a bull by its nose long enough for a rope to be secured around its neck. Bulldogs as pets were continually promoted by dog dealer Bill George . In 1864, a group of Bulldog breeders under R. S. Rockstro founded the first Bulldog Club. Three years after its opening

1053-457: A particular environment and in isolation from other populations of the species. This environment included humans but with little or no selective breeding by humans . Prognathism In the case of mandibular prognathism (never maxillary prognathism) this is often also referred to as Habsburg chin , Habsburg's chin , Habsburg jaw or Habsburg's jaw especially when referenced with context of its prevalence amongst historical members of

1134-411: A potentially disfiguring genetic disorder where the lower jaw outgrows the upper, resulting in an extended chin and a crossbite . In both humans and animals, it can be the result of inbreeding . Unlike alveolar or maxillary prognathism, which are common traits in some populations, mandibular prognathism is typically pathological. However, it is more common among East Asian populations but overall,

1215-473: A pronounced mandibular prognathism . There are generally thick folds of skin on the brow; round, black, wide-set eyes; a short muzzle with characteristic folds called a rope or nose roll above the nose; hanging skin under the neck; drooping lips and pointed teeth, and an underbite with an upturned jaw. The coat is short, flat, and sleek with colours of red, fawn, white, brindle , and piebald . They have short tails that can either hang down straight or be tucked in

1296-561: A result, today dogs are the most abundant carnivore species and are dispersed around the world. The most striking example of this dispersal is that of the numerous modern breeds of European lineage during the Victorian era . A genetic study identified 51 regions of the dog genome which were associated with phenotype variation among breeds in the 57 traits studied, which included body, cranial, dental, and long bone shape and size. There were three quantitative trait loci that explained most of

1377-488: A select set of ancestors who had the same characteristics. Dogs of a specific breed breed true , producing young that are very similar to their parents. An individual dog is identified as a member of a breed through proof of ancestry, using genetic analysis or written records of ancestry. Without such proof, identification of a specific breed is not reliable. Such records, called stud books , may be maintained by individuals, clubs, or other organizations. Kennel clubs provide

1458-724: A sled dog is 20–25 kg (44–55 lb) based on thermo-regulation, and the ancient sled dogs were between 16–25 kg (35–55 lb). The same standard has been found in the remains of sled dogs from this region 2,000 years ago and in the modern Siberian Husky breed standard. Other dogs were larger at 30 kg (66 lb) and appear to be dogs that had been crossed with wolves and used for polar-bear hunting. Between 3,000 and 4,000 years ago greyhound -types of dogs were depicted on pottery and paintings in Egypt and Western Asia. Mastiff -type dogs were kept for guarding and hunting, and short-legged dogs were also bred. Most modern dog breeds are

1539-407: A study indicated that some breed-temperaments, such as anxiety or fear, may be linked to gene mutations. Other temperaments may be due to the legacies of 'ancient' ancestry. Groups of owners that have dogs of the same breed and have an interest in dog breeding can form national Kennel clubs . Kennel Clubs maintain breed standards , record pedigrees in a breed registry (or studbook), and issue

1620-475: Is a global organisation with 98 members and contract partners (one member per country) that recognize 356 purebreds. A dog crossbreed is the result of mating two different breeds. "Designer Dog" became a fad in the late 20th century. Dog crossbreeds are combinations of lineages of the domestic dog ; they are distinguished from canid hybrids , which are interspecific crosses between Canis species (wolves, coyotes, jackals, etc.). Notable canid hybrids include

1701-491: Is a protrusion of that portion of the maxilla where the teeth are located, in the dental lining of the upper jaw. Maxillary prognathism affects the middle third of the face, causing the maxilla to jut out, thereby increasing the facial area. Mandibular prognathism is a protrusion of the mandible, affecting the lower third of the face. Prognathism can also be used to describe ways that the maxillary and mandibular dental arches relate to one another, including malocclusion (where

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1782-731: Is a term formerly, but no longer, used for a particular group of dog breeds by the American Kennel Club. These breeds were referred to as "ancient", as opposed to modern, breeds because historically it was believed their origins dated back more than 500 years. In 2004, a study looked at the microsatellites of 414 purebred dogs representing 85 breeds. The study found that dog breeds were so genetically distinct that 99% of individual dogs could be correctly assigned to their breed based on their genotype , indicating that breeding barriers (purebred breeding) have led to distinct genetic units. The study identified 9 breeds that could be represented on

1863-466: Is also predisposed to atopic dermatitis . A study by the Royal Veterinary College found that Bulldogs are a much less healthy breed than average, with over twice the odds of being diagnosed with at least one of the common dog disorders investigated in the study. Over 80% of Bulldog litters are delivered by Caesarean section because their characteristically large heads can become lodged in

1944-485: Is anomalous, and significant differences can be observed among different ethnicities. Harmful habits such as thumb sucking or tongue thrusting can result in or exaggerate an alveolar prognathism, causing teeth to misalign. Functional appliances can be used in growing children to help modify bad habits and neuro-muscular function, with the aim of correcting this condition. Alveolar prognathism can also easily be corrected with fixed orthodontic therapy. However, relapse

2025-476: Is considered a disorder only if it affects chewing , speech or social function as a byproduct of severely affected aesthetics of the face. Clinical determinants include soft tissue analysis where the clinician assesses nasolabial angle, the relationship of the soft tissue portion of the chin to the nose, and the relationship between the upper and lower lips; also used is dental arch relationship assessment such as Angle's classification . Cephalometric analysis

2106-870: Is illegal in Norway and the Netherlands. The modern Bulldog was bred as a companion dog from the Old English Bulldog , a now-extinct breed used for bull-baiting , when the sport was outlawed in England under the Cruelty to Animals Act. The Bulldog Club (in England) was formed in 1878, and the Bulldog Club of America was formed in 1890. While often used as a symbol of ferocity and courage, modern Bulldogs are generally friendly, amiable dogs. Bulldogs are now commonly kept as pets; in 2013,

2187-565: Is neither a breed registry nor does it issue pedigrees or keep addresses for breeders. It is a global canine organization with member and contract partners (one member per country) that conduct international conformation shows, working/hunting/herding trials, and various other events. The results are submitted to FCI for processing, approval and international recognition. Each of the member and contract partners issue and maintain their own pedigrees and respective breed standards, and train their own judges. FCI ensures that each member mutually recognizes

2268-534: Is quite common, unless the cause is removed or a long-term retention is used. In disease states, maxillary prognathism is associated with Cornelia de Lange syndrome ; however, so-called false maxillary prognathism, or more accurately, retrognathism , where there is a lack of growth of the mandible, is by far a more common condition. Prognathism, if not extremely severe, can be treated in growing patients with orthodontic functional or orthopaedic appliances. In adult patients this condition can be corrected by means of

2349-575: Is said to be purebred if their parents were purebred and if the dog meets the standards of the breed. The American Kennel Club allows mixed-breed dogs to be shown but under the condition the animals have been spayed or neutered, are not a wolf hybrid, and not eligible for the AKC Foundation Stock Service Program or an AKC Purebred Alternative Listing (PAL). In Canada, the Animal Pedigree Act lays out strict standards for

2430-529: Is the most accurate way of determining all types of prognathism, as it includes assessments of skeletal base, occlusal plane angulation, facial height, soft tissue assessment and anterior dental angulation. Various calculations and assessments of the information in a cephalometric radiograph allow the clinician to objectively determine dental and skeletal relationships and determine a treatment plan. Prognathism should not be confused with micrognathism , although combinations of both are found. Alveolar prognathism

2511-425: Is the oldest mono-breed dog kennel club in the world. The Bulldog was officially recognised by the American Kennel Club in 1886. In 1894, the two top Bulldogs, King Orry and Dock Leaf, competed in a contest to see which dog could walk 20 miles (32 km). King Orry was reminiscent of the original Bulldogs, lighter-boned and very athletic. Dock Leaf was a smaller and heavier set, more like modern Bulldogs. King Orry

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2592-532: The Dutch Kennel Club implemented some breeding rules to improve the health of the Bulldog. Among these is a fitness test where the dog has to walk 1 km (0.62 miles) in 12 minutes. Its temperature and heart rate have to recover after 15 minutes. In 2014, the Dutch government forbade the breeding of dogs with a snout shorter than a third of the skull, including Bulldogs, a law that it began enforcing in 2019. In 2022,

2673-502: The Fédération Cynologique Internationale ." In 2017, a study showed that 9,000 years ago the domestic dog was present at what is now Zhokhov Island , arctic north-eastern Siberia, which was connected to the mainland at that time. The dogs were selectively bred as either sled dogs or as hunting dogs, which implies that a sled dog standard and a hunting dog standard existed at that time. The optimal maximum size for

2754-516: The House of Habsburg . Mandibular prognathism is typically pathological, whereas maxillary prognathism is often found as a result of normal human population variation. In general dentistry , oral and maxillofacial surgery , and orthodontics, this is assessed clinically or radiographically ( cephalometrics ). The word prognathism derives from Greek πρό ( pro , meaning 'forward') and γνάθος ( gnáthos , 'jaw'). One or more types of prognathism can result in

2835-494: The Oslo District Court made a ruling that banned the breeding of Bulldogs in Norway due to their propensity for developing health problems. In its verdict the court judged that no dog of this breed could be considered healthy, therefore using them for breeding would be a violation of Norway's Animal Welfare Act. Bulldogs are often associated with determination, strength, and courage due to their historical occupation, though

2916-484: The coydog , coywolf , dingo–dog hybrid , jackal–dog hybrid , and wolfdog .   Historically, crosses between dogs of different types were more well accepted at a time when modern purebred breeds (based on the eugenics principles) did not yet exist. Some crossbred dogs, created by breeding two purebred dogs of different breeds, may have the advantage of heterosis , or crossbreed vigor. This advantage can be progressively diluted when two crossbreeds are bred in

2997-418: The fleas and diverse small sorts." A study in 2012 examined 49,000 single nucleotide polymorphisms that gave a genome -wide coverage of 1,375 dogs representing 35 breeds, 19 wolves, and previous published genetic signatures of other breeds, giving a total of 121 breeds covered. The study found a deep genetic split between old-world and new-world wolves, and confirmed the genetic divergence of 13 breeds from

3078-500: The 19th century and that claims of their antiquity are based on little or no historical or empirical evidence. The study indicated that throughout history, global dog populations experienced numerous episodes of diversification and homogenization, with each round further reducing the power of genetic data derived from modern breeds to help infer their early history. Of the basal breeds, the American Eskimo Dog and Eurasier were

3159-644: The BBC documentary Pedigree Dogs Exposed , The Kennel Club introduced revised breed standards for the British Bulldog, along with 209 other breeds, to address health concerns. Opposed by the British Bulldog Breed Council, it was speculated by the press that the changes would lead to a smaller head, fewer skin folds, a longer muzzle, and a taller thinner posture, to combat problems with respiration and breeding due to head size and width of shoulders. In 2019

3240-456: The Bulldog was the 12th most frequently registered breed worldwide. The first reference to the word "Bulldog" is dated 1631 or 1632 in a letter by a man named Preswick Eaton where he writes: "procuer mee two good Bulldogs, and let them be sent by ye first shipp". In 1666, English scientist Christopher Merret applied: "Canis pugnax, a Butchers Bull or Bear Dog ", as an entry in his Pinax Rerum Naturalium Britannicarum . The designation "bull"

3321-634: The Club ceased to exist, not having organized a single show. The main achievement of the Rockstro Bulldog Club was a detailed description of the Bulldog, known as the Philo-Kuan Standard. Samuel Wickens, treasurer of the club, published this description in 1865 under the pseudonym Philo-Kuan. On 4 April 1873, The Kennel Club was founded, the first dog breeding club dealing with the registration of purebred dogs and dog breeds. Bulldogs were included in

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3402-449: The English language to mention numbers of dog types are from the "Cynegetica" (hunting literature), namely, The Art of Venery (1327) by Twiti (Twici), a treatise that describes hunting with the limer (a leashed bloodhound type); the pack of running hounds , which included barcelets and brachetz (both scent hounds ); and the sighthound and greyhound . More significant in recording

3483-445: The attempt to create a breed, narrowing the gene pool. The best way to continue taking advantage of crossbreed vigor is from the breeding of dogs of purebred ancestry, as this vigor is typically seen only in the first generation cross of two purebred animals of separate breeds, thus taking advantage of genetic diversity . A mongrel, mixed-breed dog or mutt is a dog that does not belong to one officially recognized breed but can be

3564-472: The best known historical example is Habsburg jaw , or Habsburg or Austrian lip , due to its prevalence in members of the House of Habsburg , which can be traced in their portraits. The process of portrait-mapping has provided tools for geneticists and pedigree analysis; most instances are considered polygenic , but a number of researchers believe that this trait is transmitted through an autosomal recessive type of inheritance. Allegedly introduced into

3645-548: The branches of a phylogenetic tree which grouped together with strong statistical support and could be separated from the other breeds with a modern European origin. These 9 breeds had been referred to as "ancient breeds". The study found that the Pharaoh Hound and Ibizan Hound were not as old as once believed; rather, they had been recreated from combinations of other breeds, and that the Norwegian Elkhound grouped with

3726-473: The breed and its best representatives and developed a new standard for the English Bulldog, which was published on 27 May 1875, the same year they held the first breed show. Since 1878, exhibitions of the club were held annually, except during the Second World War . On 17 May 1894, the Bulldog Club was granted the status of a corporation and since then has carried the official name "The Bulldog Club, Inc.". It

3807-882: The breed club to be unacceptable (called faults ). In addition, most breed standards include a historical section, describing the place of origin and the original work done by the breed or its ancestor types . Dogs with a breed standard may be accepted into one or more of the major registries ( kennel clubs ) of dog breeds, including The Kennel Club (1873, UK), American Kennel Club (1884), New Zealand Kennel Club (1886), Canadian Kennel Club (1888), United Kennel Club (1898), United Kennel Clubs International (UCI, Germany 1976), Australian National Kennel Council (1958), and other national breed registries. Recognized dog breeds are classified by groups , such as Hound, Terrier, Working, Herding, Sporting, Non-Sporting, Toy and Miscellaneous; some groups may be further subdivided by some registries. Fédération Cynologique Internationale (FCI)

3888-498: The breeding, exhibiting and judging of pure-bred dogs. It now has 99 member countries. According to BigThink , over 40% of the world’s dog breeds come from the United Kingdom , France and Germany . It states: " Great Britain and France are the ground zero of dog fancying, with 57 registered breeds each. Germany is not far behind, with 47 breeds. These three countries alone represent more than 40% of all dog breeds recognized by

3969-403: The common condition of malocclusion , in which an individual's top teeth and lower teeth do not align properly. In humans, non-pathological maxillary and alveolar prognathism can occur due to normal variation among phenotypes . However, mandibular prognathism is usually anomalous, and it may be a malformation, the result of injury, a disease state, or a hereditary condition. Prognathism

4050-439: The condition is polygenic. In brachycephalic or flat-faced dogs, like shih tzus and boxers , it can lead to problems such as underbite. In humans, it results in a condition sometimes called lantern jaw , reportedly derived from 15th century horn lanterns , which had convex sides. Traits such as these were often exaggerated by inbreeding, and can be traced within specific families. Although more common than appreciated,

4131-461: The documenting of what it calls "evolving breeds". The breed standard for each breed of dog is a detailed description of the appearance and behaviour of an idealized dog of that breed. Included in the breed standard description are externally observable aspects of appearance and behaviour that are considered by the breed club to be the most important for the breed, and externally observable details of appearance or temperament that are considered by

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4212-556: The dog–wolf genetic divergence are not known. Dogs are the most variable mammal on earth with around 450 globally recognized dog breeds. In the Victorian era , directed human selection developed the modern dog breeds, which resulted in a vast range of phenotypes. Most breeds were derived from small numbers of founders within the last 200 years, and since then dogs have undergone rapid phenotypic change and were formed into today's modern breeds due to artificial selection imposed by humans. These breeds can vary in size and weight from

4293-504: The end of the Victorian era, society had changed and so did the role of dogs. The form was given a more prominent role than function. Different types or breeds of dog were being developed by breeders who wanted to define specific characteristics and desirable features in their dogs. Driven by dog shows and the groups that hosted them, the term dog breed took on an entirely new meaning. Dog show competitions included best-in-breed winners, and

4374-455: The expression and behaviour". Bulldogs are known for getting along well with children, other dogs, and other pets. A 2022 study in the UK of veterinary data found a life expectancy of 7.39 years, the second lowest of all breeds in the study. A 2024 UK study found a life expectancy of 9.8 years for the breed compared to an average of 12.7 for purebreeds and 12 for crossbreeds . A 2004 UK survey found

4455-556: The family by a member of the Piast dynasty , it is clearly visible on family tomb sculptures in St. John's Cathedral, Warsaw . A high propensity for politically motivated intermarriage among Habsburgs meant the dynasty was virtually unparalleled in the degree of its inbreeding. Charles II of Spain , who lived 1661 to 1700, is said to have had the most pronounced case of the Habsburg jaw on record, due to

4536-659: The first volume of the Kennel Club Stud Book, which was presented at the Birmingham Show on 1 December 1874. The first English Bulldog entered into the register was a male dog named Adam, born in 1864. In March 1875, the third Bulldog Club was founded, which still exists today. Members of this club met frequently at the Blue Post pub on Oxford Street in London . The founders of the club collected all available information about

4617-452: The high number of consanguineous marriages in the dynasty preceding his birth. Prior to the development of modern dentistry, there was no treatment for this condition; those who had it simply endured it. Today, the most common treatment for mandibular prognathism is a combination of orthodontics and orthognathic surgery . The orthodontics can involve braces , removal of teeth, or a mouthguard . In entomology , prognathous means that

4698-542: The highest amongst all breeds. Similarly, the breed has the worst score in the British Veterinary Association/Kennel Club Hip Dysplasia scoring scheme, although only 22 Bulldogs were tested in the scheme. A study in England found the Bulldog to have a nearly three times greater risk of patellar luxation , with 2.9% of all Bulldogs having the condition. In a 1963 UK study, 17% of Bulldogs surveyed had skin fold dermatitis . The breed

4779-437: The last 200 years. As a result of their adaptability to many environments and breedability for human needs, today dogs are the most abundant carnivore species and are dispersed around the world. A dog breed will consistently produce the physical traits, movement and temperament that were developed over decades of selective breeding. For each breed they recognize, kennel clubs and breed registries usually maintain and publish

4860-480: The latter caused due to an inability to effectively reduce body temperature via panting. Many airlines ban the breed from flying in the cargo hold due to a high rate of deaths from air pressure interacting poorly with their breathing problems. Statistics from the Orthopedic Foundation for Animals indicate that of the 467 Bulldogs tested between 1979 and 2009 (30 years), 73.9% were affected by hip dysplasia ,

4941-623: The leading cause of death of Bulldogs to be cardiac-related (20%), cancer (18%), and old age (9%). The shortened snout and pushed in face of the Bulldog is known as brachycephaly . Brachycephaly results in deformation of the upper airway tract and leads to obstruction of breathing. Effects of brachycephaly are stridor , stertorous breathing, emesis , skin fold dermatitis , brachycephalic airway obstructive syndrome , exophthalmos , pharyngeal gag reflex , cyanosis , and laryngeal collapse. Other issues arising from brachycephaly are risk of complications whilst under anaesthesia, and hyperthermia — with

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5022-454: The modern breeds because the genetic heritage of the modern breeds has become blurred due to admixture, and the basal breeds have mostly avoided admixture with them due to geographic or cultural barriers. As dogs are a subspecies but their breeds are distinct genetic units, and because only certain breeds share the same type of cancers as humans, the differences in the genes of different breeds may be useful in human medical research. In 2014,

5103-586: The modern-day dog is bred for appearance and friendliness and not suited for significant physical exertion. They are often used as mascots by universities, sports teams, and other organizations. Some of the better-known Bulldog mascots include Georgetown's Jack , Butler's Blue IV , Yale's Handsome Dan , the University of Georgia's Uga , Mississippi State's Bully , and the United States Marine Corps' Chesty . The Bulldog originated in England and has

5184-416: The most part, artificially created from random-bred populations by human selective breeding with the purpose of enhancing desired physical, behavioral, or temperamental characteristics. Dogs that are not purebred are not necessarily a mix of such defined breeds. Therefore, among some experts and fans of such dogs, mongrel is still the preferred term. Natural breeds rose through time in response to

5265-484: The most variable mammal on Earth, with artificial selection producing upward of 360 globally recognized breeds. These breeds possess distinct traits related to morphology, which include body size and shape, tail phenotype , fur type, etc, but are only one species of dog. Their behavioral traits include guarding, herding, and hunting, and personality traits such as hyper-social behavior, boldness, and aggression. Most breeds were derived from small numbers of founders within

5346-455: The mother's birth canal and to avoid potential breathing problems for the mother during labour. A British study found demodicosis to be more prevalent in the Bulldog than other breeds. The overall prevalence was 1.5% in the breed compared to the 0.17% rate for all dogs. For dogs aged under 2 years, the prevalence was 3.6% compared to 0.48%. The Bulldog is one of the two most commonly affected breeds for hiatal hernia . In January 2009, after

5427-458: The other European dogs despite reports of direct Scandinavian origins dating back 5,000 years. Dog types are broad categories of dogs based on form, function or style of work, lineage, or appearance. In contrast, modern dog breeds are particular breed standards, sharing a common set of heritable characteristics, determined by the kennel club that recognizes the breed. The spread of modern dog breeds has been difficult to resolve because many are

5508-441: The pedigrees and judges of all FCI members. Purebred dogs have more health problems than mongrel dogs, and require more veterinary visits, and tend to have lower longevity. Indeed, studies have reported lifespans that are shorter by between one and almost two years. Notably, dog breeds with flat faces and short noses have breathing difficulties, eye trouble and other health issues. The Fédération Cynologique Internationale

5589-412: The phenotype variation. Indicators of recent selection were shown by many of the 51 genomic regions that were associated with traits that define a breed, which include body size, coat characteristics, and ear floppiness. Wolf Shar Pei Shiba Inu Chow Chow Akita Inu Basenji Siberian Husky Alaskan Malamute Afghan Hound Saluki other breeds in the study "Ancient breed"

5670-598: The product of the controlled breeding practices of the Victorian era (1830–1900). In 2010, a study looked at 48,000  single nucleotide polymorphisms that gave a genome -wide coverage of 912 dogs representing 85 breeds. The study found distinct genetic clusters within modern dogs that largely corresponded to phenotype or function. These included spitz-breeds, toy dogs, spaniels, Mastiff-like breeds, small terriers, retrievers, herding dogs, scent-hounds, and sight-hounds. There were 17 breeds that conflicted with phenotype or function and these were thought to be

5751-501: The products of the controlled breeding practices of the Victorian era (1830-1900), and the accurate documenting of pedigrees with the establishment of the English Kennel Club in 1873 in imitation of other stud book registries for cattle and horses. The domestic dog is the first species, and the only large carnivore , to have been domesticated. The first dogs were certainly wolflike, but the phenotypic changes that coincided with

5832-425: The purebreds were winning. Breed standards are the reason the breed came to be, and with those standards are key features, including form, function and fitness for purpose. The Kennel Club in the UK was founded in 1873, and was the world's first national kennel club and breed registry. The International Canine Federation was founded in 1911 as a worldwide organization. Its objective is to bring global uniformity to

5913-534: The recognition of distinct dog breeds, but there are many independent clubs with differing, and sometimes inconsistent standards and they need not apply scientific standards. Four varieties of the Belgian Shepherd Dog are recognised as four distinct breeds by the New Zealand Kennel Club . Further, some groups of dogs which clearly share a persistent set of characteristics and documented descent from

5994-633: The result of crossing some of the other phenotypes. As in a 2004 study that found 9 'ancient breeds' to be genetically divergent, the study found 13 breeds that were genetically divergent from the modern breeds: the Basenji , Saluki , Afghan hound , Samoyed , Canaan dog , New Guinea singing dog , dingo , Chow Chow , Chinese Shar Pei , Akita , Alaskan malamute , Siberian husky and American Eskimo dog . The study found that there were three well-supported groups that were highly divergent and distinct from modern domestic dogs. The earliest books in

6075-455: The rules for conformation dog shows and trials and accreditation of judges. They often serve as registries , which are lists of adult purebred dogs and lists of litters of puppies born to purebred parents. A dog breed is represented by a sufficient number of individuals to stably transfer its specific characteristics over generations. Dogs of same breed have similar characteristics of appearance and behavior, primarily because they come from

6156-547: The stocky bodies and massive heads and jaws that typify the breed, as well as a ferocious and savage temperament. Bull-baiting was made illegal in England by the Cruelty to Animals Act 1835 . Therefore, the Old English Bulldog had outlived its usefulness in England as a sporting animal and its "working" days were numbered. However, emigrants did have a use for such dogs in the New World. In mid-17th century New York, Bulldogs were used as

6237-401: The upper and lower teeth do not align). When there is maxillary or alveolar prognathism which causes an alignment of the maxillary incisors significantly anterior to the lower teeth, the condition is called an overjet . When the reverse is the case, and the lower jaw extends forward beyond the upper, the condition is referred to as retrognathia (reverse overjet) . Not all alveolar prognathism

6318-542: The use and description of various dog types is The Master of Game (circa 1406) by Edward of York , a treatise that 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 French hunting treatise Livre de Chasse by Gaston Phoebus (circa 1387). The Book of Saint Albans , published in 1486,

6399-478: The very recent product of cross-breeding other basal breeds. Most basal breeds have hybridized with other lineages in the past. If those other lineages were other basal breeds then a basal genetic signature remains. The combination of introgression and past population bottlenecks suggested that basal breeds have little or no genetic connections to their ancestral populations and that their genetic distinctiveness does not signify ancient heritage. They are distinctive from

6480-430: Was applied because of the dog's use in the sport of bull-baiting . This entailed the setting of dogs (after placing wagers on each dog) onto a tethered bull. The dog that grabbed the bull by the nose and pinned it to the ground would be the victor. It was common for a bull to maim or kill several dogs at such an event, either by goring, tossing, or trampling over them. Over the centuries, dogs used for bull-baiting developed

6561-406: Was declared the winner that year, finishing the 20-mile (32 km) walk while Dock Leaf collapsed and expired. Though today Bulldogs look tough, they cannot perform the job they were originally bred for, as they cannot withstand the rigours of running after and being thrown by a bull, and also cannot grip with such a short muzzle. Bulldogs have characteristically wide heads and shoulders along with

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