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<h2 id="true-breeding">True breeding</h2> <p>In the world of <a href="/facts/Selective_breeding/CAkkM2UG">selective animal breeding</a>, to "breed true" means that specimens of an animal <a href="/facts/Breed/PlMHRQqT">breed</a> will breed true-to-type when mated like-to-like; that is, that the progeny of any two individuals of the same breed will show fairly consistent, replicable and predictable characteristics, or traits with sufficiently high heritability.<a class="footnote-ref" id="fnref:1" href="#fn:1"><sup>1</sup></a><a class="footnote-ref" id="fnref:2" href="#fn:2"><sup>2</sup></a> A puppy from two purebred dogs of the same breed, for example, will exhibit the traits of its parents, and not the traits of all breeds in the subject breed's ancestry. </p><p>Breeding from too small a gene pool, especially direct <a href="/facts/Inbreeding/KRoRX08G">inbreeding</a>, can lead to the passing on of undesirable characteristics or even a collapse of a breed population due to <a href="/facts/Inbreeding_depression/zXE15r0y">inbreeding depression</a>. Therefore, there is a question, and often heated controversy, as to when or if a breed may need to allow "outside" stock in for the purpose of improving the overall health and vigor of the breed. </p><p>Because pure-breeding creates a limited <a href="/facts/Gene_pool/kYRN6qIa">gene pool</a>, purebred animal breeds are also susceptible to a wide range of congenital health problems.<a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a> This problem is especially prevalent in competitive dog breeding and dog show circles due to the singular emphasis on aesthetics rather than health or function. Such problems also occur within certain segments of the horse industry for similar reasons. The problem is further compounded when breeders practice <a href="/facts/Inbreeding/KRoRX08G">inbreeding</a>.<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a> The opposite effect to that of the restricted gene pool caused by pure-breeding is known as <a href="/facts/Hybrid_vigor/hyvtkDE8">hybrid vigor</a>, which generally results in healthier animals.<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a> </p> <h2 id="pedigrees">Pedigrees</h2> <p class="note">See also: <a href="/facts/Breed_registry/TV2ApgCg">Breed registry</a></p> <p>A pedigreed animal is one that has its ancestry recorded. Often this is tracked by a major <a href="/facts/Breed_registry/TV2ApgCg">registry</a>. The number of generations required varies from breed to breed, but all pedigreed animals have papers from the registering body that attest to their ancestry. </p><p>The word "pedigree" appeared in the English language in 1410 as "pee de Grewe", "pedegrewe" or "pedegru", each of those words being borrowed to the Middle French "pié de grue", meaning "crane foot". This comes from a visual analogy between the trace of the bird's foot and the three lines used in the English official registers to show the ramifications of a genealogical tree.<a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a> </p><p>Sometimes the word <i>purebred</i> is used synonymously with <i>pedigreed</i>, but purebred refers to the animal having a known ancestry, and pedigree refers to the written record of breeding. Not all purebred animals have their lineage in written form. For example, until the 20th century, the <a href="/facts/Bedouin/gIASwABv">Bedouin</a> people of the <a href="/facts/Arabian_Peninsula/x1fDka2b">Arabian Peninsula</a> only recorded the ancestry of their <a href="/facts/Arabian_horse/fGokXVUY">Arabian horses</a> via an <a href="/facts/Oral_tradition/0hzwefby">oral tradition</a>, supported by the swearing of religiously based oaths as to the <a href="/facts/Asil_(disambiguation)/32jHrRFF">asil</a> or "pure" breeding of the animal. Conversely, some animals may have a recorded pedigree or even a registry, but not be considered "purebred". Today the modern <a href="/facts/Anglo-Arabian/yx2UM9dn">Anglo-Arabian</a> horse, a cross of <a href="/facts/Thoroughbred/DTtNAnef">Thoroughbred</a> and <a href="/facts/Arabian_horse/fGokXVUY">Arabian</a> bloodlines, is considered such a case. </p> <h2 id="by-type">By type</h2> <h3>Dogs</h3> <p class="note">See also: <a href="/facts/Dog_breed/sfzAFQ6a">Dog breed</a> and <a href="/facts/List_of_dog_breeds/XJbsQ0lN">List of dog breeds</a></p> <p>A <i>purebred dog</i> is a dog of a <a href="/facts/Dog_breed/sfzAFQ6a">modern breed of dog</a>, with written documentation showing the individual purebred dog's descent from its breeds' <a href="/facts/Foundation_bloodstock/v6r1cNfu">foundation stock</a>[<i>dubious – discuss</i>]. In dogs, the term breed is used two ways: loosely, to refer to <a href="/facts/Dog_type/xPnpGEY6">dog types</a> or <a href="/facts/Landrace/wPwtXcI8">landraces</a> of dog (also called natural breeds or ancient breeds); or more precisely, to refer to modern breeds of dog, which are documented so as to be known to be descended from specific ancestors, that closely resemble others of their breed in appearance, movement, way of working and other characters; and that reproduce with offspring closely resembling each other and their parents.<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a> Purebred dogs are breeds in the second sense. </p><p>New breeds of dog are constantly being created, and there are many websites for new breed associations and breed clubs offering legitimate registrations for new or rare breeds. When dogs of a new breed are "visibly similar in most characteristics" and have reliable documented descent from a "known and designated foundation stock",<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a> then they can then be considered members of a breed, and, if an individual dog is documented and registered, it can be called <i>purebred</i>. </p> <h3>Cats</h3> <p class="note">See also: <a href="/facts/List_of_cat_breeds/u4c0RI0a">List of cat breeds</a></p> <p>A cat whose <a href="/facts/Genealogy/vIAYr85a">ancestry</a> is formally registered is called a <a href="/facts/Purebred_cat/u4c0RI0a">pedigreed or purebred cat</a>. Technically, a <i>purebred</i> cat is one whose ancestry contains only individuals of the same breed. A <i>pedigreed</i> cat is one whose ancestry is recorded with a <a href="/facts/Cat_registry/x5KUgTk3">cat registry</a>, but may have ancestors of different breeds. <a href="/facts/Landrace/wPwtXcI8"><i>Landraces</i></a> are not cat breeds, but a selective group of representative cats can be used as <a href="/facts/Foundation_stock/v6r1cNfu">foundation stock</a> to create a new cat breed (examples of breeds created in this way are the <a href="/facts/Maine_Coon/0msMa2Wu">Maine Coon</a>, <a href="/facts/European_Shorthair/Ak27uXJl">European Shorthair</a> and <a href="/facts/Siberian_cat/7BDpD80A">Siberian</a>). </p><p>Because of common crossbreeding in populated areas, most cats are simply identified as belonging to the unregistered non-pedigree cats of mixed or unknown ancestry, referred to as <a href="/facts/Domestic_long-haired_cat/mhoPEr9u">domestic long-haired</a> and <a href="/facts/Domestic_short-haired_cat/zPcMMHGp">domestic short-haired cat</a>, depending on their fur length.<a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a> Other commonly used terms are random-bred cat, domestic cat, house(hold) cat or moggie/moggy (UK English).<a class="footnote-ref" id="fnref:10" href="#fn:10"><sup>10</sup></a> Out of the hundreds of millions of cats worldwide, almost none have any purebred ancestors, nor belong to a specific breed, because purebred cats are a human invention of the last 150 years and selectively bred from <a href="/facts/Foundation_stock/v6r1cNfu">foundation stock</a> by breeders in closed off lineages. </p><p>Approximately 3–4% of the cats in the US are purchased from breeders.<a class="footnote-ref" id="fnref:11" href="#fn:11"><sup>11</sup></a><a class="footnote-ref" id="fnref:12" href="#fn:12"><sup>12</sup></a> Not all breeders sell registered pedigree cats.<a class="footnote-ref" id="fnref:13" href="#fn:13"><sup>13</sup></a> In France, approximately 4% of cats are pedigreed.<a class="footnote-ref" id="fnref:14" href="#fn:14"><sup>14</sup></a> Worldwide the number of pedigreed cats is somewhat lower, and is estimated at approximately 1–2%.<a class="footnote-ref" id="fnref:15" href="#fn:15"><sup>15</sup></a> </p><p>By definition all cats belonging to a specific breed are pedigreed cats with a known and formally <a href="/facts/Cat_registry/x5KUgTk3">registered</a> <a href="/facts/Genealogy/vIAYr85a">ancestry</a> with one of the <a href="/facts/Cat_registry/x5KUgTk3">cat registries</a>, also known as the cat’s “paperwork” or pedigree.<a class="footnote-ref" id="fnref:16" href="#fn:16"><sup>16</sup></a><a class="footnote-ref" id="fnref:17" href="#fn:17"><sup>17</sup></a> The <a href="/facts/List_of_cat_breeds/u4c0RI0a">list of cat breeds</a> is quite large: most <a href="/facts/Cat_registry/x5KUgTk3">cat registries</a> actually recognize between 30 and 75<a class="footnote-ref" id="fnref:18" href="#fn:18"><sup>18</sup></a> breeds of cats, and several more are in development, with one or more new breeds being recognized each year on average, having distinct features (<a href="/facts/Phenotype/vxWXKGLj">phenotype</a>) and <a href="/facts/Pedigree_chart/smI3Q7Bq">lineage</a>. Nowadays, there exist over 100 <a href="/facts/List_of_cat_breeds/u4c0RI0a">cat breeds and varieties</a> recognized by at least one of the official <a href="/facts/Cat_registry/x5KUgTk3">cat registries</a>.<a class="footnote-ref" id="fnref:19" href="#fn:19"><sup>19</sup></a> The purpose of the registry of cat breeds is to develop and maintain a healthy breed by controlling <a href="/facts/Inbreeding/KRoRX08G">inbreeding</a> and the spread of <a href="/facts/Genetic_disorder/hFqt2NLn">hereditary diseases</a>, and regulating the well-being of the cats.<a class="footnote-ref" id="fnref:20" href="#fn:20"><sup>20</sup></a><a class="footnote-ref" id="fnref:21" href="#fn:21"><sup>21</sup></a><a class="footnote-ref" id="fnref:22" href="#fn:22"><sup>22</sup></a> <a href="/facts/Cat_culture/CzU0ustt">Owners and breeders</a> compete in <a href="/facts/Cat_show/RP9V3GlF">cat shows</a> to see whose animal bears the closest resemblance (best <i>conformance</i>) to an idealized definition, based on <a href="/facts/Breed_type/vS4rb8aE">breed type</a> and the <a href="/facts/Breed_standard/vS4rb8aE">breed standard</a> for each breed.<a class="footnote-ref" id="fnref:23" href="#fn:23"><sup>23</sup></a> </p><p>Modern breeders created cat breeds, which are actually feline <a href="/facts/Hybrid_(biology)/pzVJ54xU">hybrids</a> between a <a href="/facts/Wild_cat/Fryfw7gm">wild cat species</a> and the domestic cat species (<i><a href="/facts/Cat/82d0y6D5">Felis catus</a></i> ). A famous example of such a hybrid cat breed is the <a href="/facts/Savannah_cat/wLhn6jum">Savannah</a> cat (<i><a href="/facts/Cat/82d0y6D5">Felis catus</a></i> × <i><a href="/facts/Leptailurus_serval/3CVWCQ0J">Leptailurus serval</a></i> ), which is produced by crossing wild <a href="/facts/Serval/3CVWCQ0J">servals</a> with domestic cats.<a class="footnote-ref" id="fnref:24" href="#fn:24"><sup>24</sup></a> </p><p>Some <a href="/facts/Landrace/wPwtXcI8">natural, ancient breeds</a> of cat that have a distinct <a href="/facts/Phenotype/vxWXKGLj">phenotype</a> were formerly considered or speculated to be subspecies of wild cats or domestic cats (<i>Felis catus</i>), or hybrids between them. Later genetic research shows that only one wild cat species was domesticated; the north African and southwest Asian wild cat (<i><a href="/facts/Felis_silvestris_lybica/9vRCI2Y6">Felis silvestris lybica</a></i>).<a class="footnote-ref" id="fnref:25" href="#fn:25"><sup>25</sup></a> All domestic (non-hybrid) cats and cat breeds fall under the domestic cat (<i>Felis catus</i>), and are no longer considered separate (sub)species.<a class="footnote-ref" id="fnref:26" href="#fn:26"><sup>26</sup></a> The domestication of the <i>Felis silvestris lybica</i> started around 9.000 years ago in the <a href="/facts/Near_East/gD1vyGQI">Near East</a> and <a href="/facts/Egypt/8Ttg0JwB">Egypt</a> region,<a class="footnote-ref" id="fnref:27" href="#fn:27"><sup>27</sup></a> while the <a href="/facts/Selective_breeding/CAkkM2UG">selective breeding</a> of purebred/pedigreed cat breeds only started 150 years ago. </p> <h3>Horses</h3> <p class="note">See also: <a href="/facts/Horse_breed/rCec2Ju4">Horse breed</a> and <a href="/facts/List_of_horse_breeds/uAtn3gK2">List of horse breeds</a></p> <p>Written and oral histories of various animals or pedigrees of certain types of horse have been kept throughout history, though <a href="/facts/Breed_registry/TV2ApgCg">breed registry</a> stud books trace back to about the 13th century, at least in <a href="/facts/Europe/DTAtrKfh">Europe</a>, when pedigrees were tracked in writing, and the practice of declaring a type of horse to be a breed or a purebred became more widespread. </p><p>Certain <a href="/facts/List_of_horse_breeds/uAtn3gK2">horse breeds</a>, such as the <a href="/facts/Andalusian_horse/3j0vqTq1">Andalusian horse</a> and the <a href="/facts/Arabian_horse/fGokXVUY">Arabian horse</a>, are claimed by aficionados of the respective breeds to be ancient, near-pure descendants from an ancient wild prototype, though mapping of the horse genome as well as the <a href="/facts/MtDNA/goC0ex0X">mtDNA</a> and <a href="/facts/Y-chromosome/nBDd0Vlg">y-DNA</a> of various breeds has largely disproved such claims. </p> <h3>Livestock</h3> <p class="note">See also: <a href="/facts/List_of_cattle_breeds/2kaXwL2c">List of cattle breeds</a>, <a href="/facts/List_of_water_buffalo_breeds/20EoXxNM">List of water buffalo breeds</a>, <a href="/facts/List_of_donkey_breeds/yRt8sFUN">List of donkey breeds</a>, <a href="/facts/List_of_guinea_pig_breeds/zyEekD12">List of guinea pig breeds</a>, <a href="/facts/List_of_duck_breeds/vRyMpvTl">List of duck breeds</a>, <a href="/facts/List_of_pig_breeds/TFo2z9X7">List of pig breeds</a>, <a href="/facts/List_of_chicken_breeds/WU8wEoxo">List of chicken breeds</a>, <a href="/facts/List_of_sheep_breeds/FT2tbAMK">List of sheep breeds</a>, <a href="/facts/List_of_rabbit_breeds/f3o6LI1X">List of rabbit breeds</a>, and <a href="/facts/List_of_pigeon_breeds/lq3Ip0gt">List of pigeon breeds</a></p> <p>Most domesticated <a href="/facts/Farm/EsIveRWU">farm</a> animals among others can also have true-breeding breeds and <a href="/facts/Breed_registry/TV2ApgCg">breed registries</a>, particularly <a href="/facts/Cattle/44qV9B6S">cattle</a>, <a href="/facts/Water_buffalo/f2lsvXBv">water buffaloes</a>, <a href="/facts/Sheep/cjkJyI4f">sheep</a>, <a href="/facts/Goat/BrsPJmdX">goats</a>, <a href="/facts/Donkey/xkn4K2IJ">donkeys</a>, <a href="/facts/Guinea_pig/gRXC2qNN">guinea pigs</a>, <a href="/facts/Chicken/RD2eTd83">chickens</a>, <a href="/facts/Fancy_pigeon/V9g9oUt6">fancy pigeons</a>, <a href="/facts/Domestic_duck/E3PChqFm">domestic ducks</a>, <a href="/facts/Rabbit/8jQGWcQD">rabbits</a>, and <a href="/facts/Pig/b5wxwdDY">pigs</a>. While animals bred strictly for market sale are not always purebreds, or if purebred may not be registered, most livestock producers value the presence of purebred genetic stock for the consistency of traits such animals provide. It is common for a farm's male breeding stock in particular to be of purebred, pedigreed lines. </p><p>In cattle, some breeders associations make a difference between "purebred" and "full blood". Full blood cattle are fully pedigreed animals, where every ancestor is registered in the herdbook and shows the typical characteristics of the breed. Purebred are those animals that have been bred-up to purebred status as a result of using full blood animals to cross with an animal of another breed. </p><p>Artificial breeding via <a href="/facts/Artificial_insemination/ccbKoyu4">artificial insemination</a> or <a href="/facts/Embryo_transfer/2N05Lrxj">embryo transfer</a> is often used in sheep and cattle breeding to quickly expand, or improve purebred herds. Embryo transfer techniques allow top quality female <a href="/facts/Livestock/Quhv6GvP">livestock</a> to have a greater influence on the genetic advancement of a herd or flock in much the same way that artificial insemination has allowed greater use of superior sires.<a class="footnote-ref" id="fnref:28" href="#fn:28"><sup>28</sup></a> </p> <h2 id="notes">Notes</h2> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Hoffman, Kurt Leroy (2016). "What can animal models tell us about depressive disorders?". Modeling Neuropsychiatric Disorders in Laboratory Animals. pp. 35–86. doi:10.1016/B978-0-08-100099-1.00002-9. ISBN 978-0-08-100099-1. <a href="978-0-08-100099-1" target="_blank">978-0-08-100099-1</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Rieger, R.; Michaelis, A.; Green, M.M. (1968). A glossary of genetics and cytogenetics: Classical and molecular. New York: Springer-Verlag. ISBN 9780387076683. <a href="9780387076683" target="_blank">9780387076683</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>Hurricane Hound. Dog-town. National Geographic Channel. <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>Pedigree Dogs Exposed (TV documentary). BBC. <a href="/wiki/BBC" target="_blank">/wiki/BBC</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>Hurricane Hound. Dog-town. National Geographic Channel. <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>"History of dog pedigree in Europe". BraqueDuBourbonnais.info. <a href="http://www.braquedubourbonnais.info/en/pedigree.htm" target="_blank">http://www.braquedubourbonnais.info/en/pedigree.htm</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>Webster's Third New International Dictionary of the English Language, Unabridged. Springfield, Massachusetts: G&C Merriam Company. 1967. p. 274. A breed is a group of domestic animals related through common ancestors and visibly similar in most characteristics, having been differentiated from others by human influence; a distinctive group of domesticated animals differentiated from the wild type under the influence of man, the sum of the progeny of a known and designated foundation stock without admixture of other blood. <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>Webster's Third New International Dictionary of the English Language, Unabridged. Springfield, Massachusetts: G&C Merriam Company. 1967. p. 274. A breed is a group of domestic animals related through common ancestors and visibly similar in most characteristics, having been differentiated from others by human influence; a distinctive group of domesticated animals differentiated from the wild type under the influence of man, the sum of the progeny of a known and designated foundation stock without admixture of other blood. <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> <li id="fn:9"><p>Baggaley, Ann; Goddard, Jolyon; John, Katie (2014). The Cat Encyclopedia. London: Dorling Kindersley. ISBN 9781409347903. OCLC 879716720.[page needed] <a href="9781409347903" target="_blank">9781409347903</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></p></li> <li id="fn:10"><p>"All About Mixed Breed Cats: What Mix Is Yours? | ASPCA Pet Health Insurance". ASPCAPetInsurance.com. Retrieved 16 September 2023. <a href="https://www.aspcapetinsurance.com/resources/mixed-breed-cat/" target="_blank">https://www.aspcapetinsurance.com/resources/mixed-breed-cat/</a> <a href="#fnref:10" class="footnote-back-ref">↩</a></p></li> <li id="fn:11"><p>"Pet Statistics". ASPCA. Retrieved 16 September 2023. <a href="https://www.aspca.org/helping-people-pets/shelter-intake-and-surrender/pet-statistics" target="_blank">https://www.aspca.org/helping-people-pets/shelter-intake-and-surrender/pet-statistics</a> <a href="#fnref:11" class="footnote-back-ref">↩</a></p></li> <li id="fn:12"><p>"Pets by the numbers - HumanePro by The Humane Society of the United States". humanepro.org. Retrieved 16 September 2023. <a href="https://humanepro.org/page/pets-by-the-numbers" target="_blank">https://humanepro.org/page/pets-by-the-numbers</a> <a href="#fnref:12" class="footnote-back-ref">↩</a></p></li> <li id="fn:13"><p>"What are Papers and Do I Need Them For My Pedigree Kitten?". Registered Pets. Retrieved 30 March 2023. <a href="https://www.registeredpets.co.uk/blog/what-are-papers-and-why-are-they-important-for-my-pedigree-kitten" target="_blank">https://www.registeredpets.co.uk/blog/what-are-papers-and-why-are-they-important-for-my-pedigree-kitten</a> <a href="#fnref:13" class="footnote-back-ref">↩</a></p></li> <li id="fn:14"><p>All purebred cats born in France after 1999 should be registered with LOOF. LOOF registry data from 2003-2022 is publicly available and shows that 646774 cats were registered in that time period.[12] In 2022, France had a cat population of 14.9 million according to Statista.[13] Discarding the import and export of French purebred cats and cats born before 2003 (due to lack of data), this means 646774 out of 14.9 million or 4.3% of the French cats is registered/pedigreed. As most cat registries don't have their data public, are an international registry, or not forced by national laws, this is one of the few sources that gives a valid indication on cat registry numbers. Most self-reported data on cat breeds is influenced by the fact that rescues/owners label for example all solid blue cats as Russian Blue cats.[14] <a href="/w/index.php?title=Livre_Officiel_des_Origines_F%C3%A9lines&action=edit&redlink=1" target="_blank">/w/index.php?title=Livre_Officiel_des_Origines_F%C3%A9lines&action=edit&redlink=1</a> <a href="#fnref:14" class="footnote-back-ref">↩</a></p></li> <li id="fn:15"><p>Based on the approximately 4% of the known pedigreed cats in France, and the popularity of pedigreed cats in France compared to all other countries worldwide. The cat fancy is well established in France since the end of the 19th-century. The popularity of pedigree cats in France is also seen in the amount of different breeds registered with LOOF,[12] and the numbers of France born and living pedigree cats compared to other countries in the PawPeds-database.[15] <a href="#fnref:15" class="footnote-back-ref">↩</a></p></li> <li id="fn:16"><p>"Finding the Purr-fect Pedigreed Kitten". CFA.org. The Cat Fanciers' Association. Retrieved 30 March 2023. <a href="https://cfa.org/finding-the-purr-fect-pedigreed-kitten/" target="_blank">https://cfa.org/finding-the-purr-fect-pedigreed-kitten/</a> <a href="#fnref:16" class="footnote-back-ref">↩</a></p></li> <li id="fn:17"><p>"What are Papers and Do I Need Them For My Pedigree Kitten?". Registered Pets. Retrieved 30 March 2023. <a href="https://www.registeredpets.co.uk/blog/what-are-papers-and-why-are-they-important-for-my-pedigree-kitten" target="_blank">https://www.registeredpets.co.uk/blog/what-are-papers-and-why-are-they-important-for-my-pedigree-kitten</a> <a href="#fnref:17" class="footnote-back-ref">↩</a></p></li> <li id="fn:18"><p>The International Cat Association (31 July 2018). "Browse All Breeds". TICA.org. Retrieved 31 March 2023. <a href="/wiki/The_International_Cat_Association" target="_blank">/wiki/The_International_Cat_Association</a> <a href="#fnref:18" class="footnote-back-ref">↩</a></p></li> <li id="fn:19"><p>Baggaley, Ann; Goddard, Jolyon; John, Katie (2014). The Cat Encyclopedia. London: Dorling Kindersley. ISBN 9781409347903. OCLC 879716720.[page needed] <a href="9781409347903" target="_blank">9781409347903</a> <a href="#fnref:19" class="footnote-back-ref">↩</a></p></li> <li id="fn:20"><p>"WCF Breeding and Registration rules for all member clubs". WCF.info. World Cat Federation. Retrieved 30 March 2023. <a href="http://wcf.info/WCF-EN/zuechterinfo/zuchtregeln.html" target="_blank">http://wcf.info/WCF-EN/zuechterinfo/zuchtregeln.html</a> <a href="#fnref:20" class="footnote-back-ref">↩</a></p></li> <li id="fn:21"><p>"GCCF Registers affect showing and breeding". GCCFCats.org. Governing Council of the Cat Fancy. <a href="https://www.gccfcats.org/breeding-cats/new-to-breeding/registration-policies/" target="_blank">https://www.gccfcats.org/breeding-cats/new-to-breeding/registration-policies/</a> <a href="#fnref:21" class="footnote-back-ref">↩</a></p></li> <li id="fn:22"><p>"Disqualifiers and General Faults". WorldCatCongress.org. World Cat Congress. Retrieved 30 March 2023. <a href="https://www.worldcatcongress.org/wp/cat_disq_comp.php" target="_blank">https://www.worldcatcongress.org/wp/cat_disq_comp.php</a> <a href="#fnref:22" class="footnote-back-ref">↩</a></p></li> <li id="fn:23"><p>World Cat Federation (WCF). "Definitions in the Standard". WCF.info. Retrieved 31 March 2023. <a href="/wiki/World_Cat_Federation" target="_blank">/wiki/World_Cat_Federation</a> <a href="#fnref:23" class="footnote-back-ref">↩</a></p></li> <li id="fn:24"><p>Baggaley, Ann; Goddard, Jolyon; John, Katie (2014). The Cat Encyclopedia. London: Dorling Kindersley. ISBN 9781409347903. OCLC 879716720.[page needed] <a href="9781409347903" target="_blank">9781409347903</a> <a href="#fnref:24" class="footnote-back-ref">↩</a></p></li> <li id="fn:25"><p>Ottoni, Claudio; Van Neer, Wim; De Cupere, Bea; Daligault, Julien; Guimaraes, Silvia; Peters, Joris; Spassov, Nikolai; Prendergast, Mary E.; Boivin, Nicole; Morales-Muñiz, Arturo; Bălăşescu, Adrian; Becker, Cornelia; Benecke, Norbert; Boroneant, Adina; Buitenhuis, Hijlke; Chahoud, Jwana; Crowther, Alison; Llorente, Laura; Manaseryan, Nina; Monchot, Hervé; Onar, Vedat; Osypińska, Marta; Putelat, Olivier; Quintana Morales, Eréndira M.; Studer, Jacqueline; Wierer, Ursula; Decorte, Ronny; Grange, Thierry; Geigl, Eva-Maria (19 June 2017). "The palaeogenetics of cat dispersal in the ancient world". Nature Ecology & Evolution. 1 (7): 0139. Bibcode:2017NatEE...1..139O. doi:10.1038/s41559-017-0139. S2CID 44041769. <a href="/wiki/Bibcode_(identifier)" target="_blank">/wiki/Bibcode_(identifier)</a> <a href="#fnref:25" class="footnote-back-ref">↩</a></p></li> <li id="fn:26"><p>"Opinion 2027 (Case 3010)". Bulletin of Zoological Nomenclature. 60 (Part 1). International Trust for Zoological Nomenclature. "Opinions" section. 31 March 2003. Archived from the original on 19 December 2008. Retrieved 18 November 2011. The majority of wild progenitors and their domestic derivatives share the same name, but in the 17 cases considered...[including Felis silvestris] the wild and domestic forms have been separately named and this has created confusion. <a href="https://web.archive.org/web/20081219211207/http://www.iczn.org/BZNMar2003opinions.htm" target="_blank">https://web.archive.org/web/20081219211207/http://www.iczn.org/BZNMar2003opinions.htm</a> <a href="#fnref:26" class="footnote-back-ref">↩</a></p></li> <li id="fn:27"><p>Ottoni, Claudio; Van Neer, Wim; De Cupere, Bea; Daligault, Julien; Guimaraes, Silvia; Peters, Joris; Spassov, Nikolai; Prendergast, Mary E.; Boivin, Nicole; Morales-Muñiz, Arturo; Bălăşescu, Adrian; Becker, Cornelia; Benecke, Norbert; Boroneant, Adina; Buitenhuis, Hijlke; Chahoud, Jwana; Crowther, Alison; Llorente, Laura; Manaseryan, Nina; Monchot, Hervé; Onar, Vedat; Osypińska, Marta; Putelat, Olivier; Quintana Morales, Eréndira M.; Studer, Jacqueline; Wierer, Ursula; Decorte, Ronny; Grange, Thierry; Geigl, Eva-Maria (19 June 2017). "The palaeogenetics of cat dispersal in the ancient world". Nature Ecology & Evolution. 1 (7): 0139. Bibcode:2017NatEE...1..139O. doi:10.1038/s41559-017-0139. S2CID 44041769. <a href="/wiki/Bibcode_(identifier)" target="_blank">/wiki/Bibcode_(identifier)</a> <a href="#fnref:27" class="footnote-back-ref">↩</a></p></li> <li id="fn:28"><p>Selk, Glenn (2002). Embryo transfer in cattle (Report). hdl:11244/49938. <a href="/wiki/Hdl_(identifier)" target="_blank">/wiki/Hdl_(identifier)</a> <a href="#fnref:28" class="footnote-back-ref">↩</a></p></li> </ol>