Xoloitzcuintle

Last updated
Xoloitzcuintle
BIR Grupp 5- MEXIKANSK NAKENHUND, Lokal Hero's King Og Hart's Istas (23607403303).jpg
A lighter-colored Xoloitzcuintle
Other namesXoloitzcuintle, Xoloitzquintle, Xoloitzcuintli
Common nicknamesXolo
OriginMexico
Traits
Coat Coated and Hairless
Kennel club standards
Fédération Cynologique Internationale standard
NotesNational dog of Mexico
Dog ( domestic dog )

The Xoloitzcuintle (or Xoloitzquintle, Xoloitzcuintli, or Xolo) is one of several breeds of hairless dog. It is found in standard, intermediate, and miniature sizes. The Xolo also comes in a coated variety, totally covered in fur. Coated and hairless can be born in the same litter as a result of the same combination of genes. The hairless variant is known as the Perro pelón mexicano or Mexican hairless dog. [1] It is characterized by its duality, wrinkles, and dental abnormalities, along with a primitive temper. In Nahuatl, from which its name originates, it is xōlōitzcuintli [ʃoːloːit͡sˈkʷint͡ɬi] (singular) [2] and xōlōitzcuintin [ʃoːloːit͡sˈkʷintin] (plural). [2] The name comes from the god Xolotl that, according to ancient narratives, is its creator and itzcuīntli [it͡sˈkʷiːnt͡ɬi] , meaning 'dog' in the Nahuatl language. [2]

Contents

History

Colima dog Xoloitzcuintle (21058489659).jpg
Colima dog
A Toy Xoloitzcuintle Youngtoyxolo.jpg
A Toy Xoloitzcuintle
Giorgio Armani, the first Xoloitzcuintle to be named best of its breed at the Westminster Dog Show. He has achieved four Bests in Show and 27 Group Firsts since joining the American Kennel Club's Non-Sporting Group in January 2011. Xoloitzcuintli - GCH Bayshore Georgio Armani 09 (16397731930).jpg
Giorgio Armani, the first Xoloitzcuintle to be named best of its breed at the Westminster Dog Show. He has achieved four Bests in Show and 27 Group Firsts since joining the American Kennel Club's Non-Sporting Group in January 2011.
Hairless and coated Xoloitzquintin Hairless and coated half.JPG
Hairless and coated Xoloitzquintin
A newborn Xoloitzcuintle Xolobebe.jpg
A newborn Xoloitzcuintle
Artist Diego Rivera with a Xoloitzcuintle at the Casa Azul Diego Rivera with a xoloitzcuintle dog in the Blue House, Coyoacan - Google Art Project.jpg
Artist Diego Rivera with a Xoloitzcuintle at the Casa Azul

Ceramic sculptures of a hairless breed of dog have been found in burial sites in ancient West Mexico. [4] In ancient times, Xolos were often sacrificed and then buried with their owners to act as guides to the soul on its journey to the underworld. They have been found in burial sites of both the Maya and the Toltec. [5]

Sixteenth-century Spanish accounts tell of large numbers of dogs being served at banquets. [6] Aztec merchant feasts could have 80–100 turkeys and 20–40 dogs served as food. [7] When these two meats were served in the same dish, the dog meat was at the bottom of the dish, possibly because it was held in lower regard. [7]

The Aztecs consumed few domesticated animals, with over 90% of the bones found at archeological sites being deer. [7]

Genetics

A 1999 genetic study using mitochondrial DNA found that the DNA sequences of the Xoloitzcuintle were identical to those of dogs from the Old World. [8] In 2018, an analysis of DNA from the entire genome indicated that domesticated dogs entered North America from Siberia for 4,500 years and were isolated for the next 9,000 years. After contact with Europeans, these dogs were replaced by Eurasian dogs and their local descendants. The pre-contact dogs exhibited a unique genetic signature that is now almost gone [9] due to their assimilation into the Eurasian dog gene pool. In 2020, the sequencing of ancient dog genome indicates that in two Mexican breeds the Chihuahua and Xoloitzcuintli derive 4% and 3% of their ancestry from pre-colonial dogs, [10] almost entirely being descended from Eurasian dogs.

Their phenotype is a consequence of canine ectodermal dysplasia caused by a mutation on the Foxl3 autosomal gene. [11]

Registry

Fédération Cynologique Internationale (FCI)

The breed did not receive any official notice in its homeland until the 1950s. The FCI, founded in 1940, was not prepared to declare the Xolo an official purebred at that time. According to breed historian Norman Pelham Wright, author of The Enigma of the Xoloitzcuintli, Xolos began to turn up at Mexican dog shows in the late 1940s. Although they were recognized as indigenous specimens of a native breed, interest in them was minimal at that time, because information was scarce and no standard existed by which to judge them. Within a decade, the FCI realized that the breed would become extinct if drastic action were not taken to save it. This led to the widely publicized Xolo Expedition of 1954. With the official sanction of the FCI, Wright and a team of Mexican and British dog authorities set off to discover if any purebred Xolos still existed in remote areas of Mexico.[ citation needed ] Eventually 10 structurally strong Xolos were found and these dogs formed the foundation of Mexico's program to revive the breed. A committee headed by Wright authored the first official standard for the breed; on May 1, 1956, the Xolo was finally recognized in its native land and, as Mexico is a member of the FCI, worldwide.[ citation needed ]

American Kennel Club (AKC)

Xolos were among the first breeds recorded by the American Kennel Club (AKC). A Mexican dog named "Mee Too" made breed history as the first AKC-registered Xolo in 1887. "Chinito Junior", bred and owned by Valetska Radtke of New York City, became the breed's only AKC champion to date. He earned his title on October 19, 1940. [12]

In 1959, the Xolo was dropped from the AKC stud book due to the breed's scarcity and perceived extinction. The Xoloitzcuintli Club of America (XCA), the official parent club for the breed, was founded on October 26, 1986, to regain AKC recognition for the breed. On May 13, 2008, AKC voted to readmit the breed to its Miscellaneous Class starting January 1, 2009. The founding members voted unanimously to recognize all three sizes (toy, miniature and standard) and both varieties (hairless and coated) at their initial meeting. Since then, the XCA has compiled a stud book modeled on requirements for eventual AKC acceptance, held an annual independent specialty show, published a quarterly newsletter, The Xolo News, and maintained an active national rescue network, National Xolo Rescue (known before 2009 as The Xolo Rescue League [13] ). Since January 1, 2007, FSS registered Xolos have been eligible to compete in AKC performance events. The breed was moved into the AKC Studbook in December 2010 and has been eligible to be shown in the AKC Non-Sporting group since January 1, 2011. [14]

Characteristics

Appearance

The breed ranges in size from about 10 to 55 lb (5 to 23 kg). The height is 9 to 26 inches (23–67 cm). Similar in appearance to a Pharaoh Hound, with a sleek body, almond-shaped eyes, large bat-like ears, and a long neck, the Xolo is notable for its dominant trait of hairlessness. [15] The dominant hairless trait originated in this breed as a spontaneous mutation thousands of years ago. The recessive expression of the trait will produce a coated variety, which is genetically inseparable from the hairless, as the homozygous appearance of the hairless mutation is fatal to the unborn pup. [16] Most litters contain both hairless and coated puppies. The coated variety, covered with a short, flat dense coat represents the original form of the dog, prior to the occurrence of the spontaneous hairless mutation. [17] The hairless variety is completely hairless on the body, with many dogs exhibiting a few short hairs on the top of the head, the toes, and the tip of the tail. Most hairless dogs are black or bluish-gray in color. The allele responsible for the Xolo's hairlessness also affects the dog's dentition: Hairless Xolos typically have an incomplete set of teeth while the dogs of the coated variety have complete dentition.

The Xolo is moderate in all aspects of its appearance, conveying an impression of strength, agility, and elegance. Xolo body proportions are rectangular, slightly longer in total body length than the height measured at the highest point of the withers (top of the shoulders). The breed occurs naturally in two varieties, hairless and coated. Hairless Xolos are the dominant expression of the heterozygous Hh hairless trait. [18] Coated Xolos (hh) are the recessive expression, and breeding hairless to coated or hairless to hairless may produce pups of either or both varieties. Breeding coated to coated will only produce coated pups because they are recessive to the hairless trait and do not carry the dominant H gene.

Both varieties occur in all hair or skin colors, and the skin is often marked, splashed, or spotted. The most common colors are various shades termed black, grey, bronze, yellowish-blonde, blue and red. The breed occurs in a range of sizes, which breeders have standardized into three designations: Standard, Miniature and Toy.

The Xoloitzcuintle has a calm and attentive temperament. [19]

Health

The Xolo has been developed by natural selection for thousands of years, and is therefore generally not prone to health and structure problems as other dog breeds more modified by human selection efforts. Xolos came from tropical climates and are not suited for outdoor life in colder temperate and northern climates; they should be considered an indoor dog breed.[ failed verification ] They need bathing, light grooming and skin care as with other dogs of similar physical type, or acne can result. Most skin problems arise from poor breeding, neglect, or over-bathing and over-lotioning, stripping natural protections and clogging pores. [20] [21]

In contemporary culture

Xoloitzcuintles are represented in popular culture and are popular pets. [22] Museo El Carmen in Mexico City exhibited a show titled Xolos, compañeros de viaje (Xolos, travel companions) in 2019–20 of more than 100 artifacts – ceramics, remains, and artworks – overviewing the importance of the Xoloitzcuintle in Mexican heritage. [23] A Xolo named Dante stars in the US blockbuster CGI animation 2017 Disney/Pixar film Coco . [22] On August 12, 2016, the Mayor of Mexico City Miguel Ángel Mancera designated the Xoloitzcuintle a "cultural heritage and symbol" of Mexico City. [24] [25] The Dolores Olmedo Museum keeps a pack of Xolos on their grounds. [26]

The Xoloitzcuintle is the symbol and mascot of Club Tijuana, the Xoloitzcuintles de Caliente, a professional soccer club founded in 2007. Xolos are depicted in some of Mexican artist Frida Kahlo's paintings, [27] one of which is commemorated on the 2007 500-peso note, featuring Frida Kahlo's painting titled Love's Embrace of the Universe, Earth, (Mexico), I, Diego, and Mr. Xólotl (1949) on the reverse of the note. [28] Diego Rivera's large murals, The History of Mexico, in the Palacio Nacional in Mexico City feature numerous Xolos. [29]

See also

Related Research Articles

<span class="mw-page-title-main">Sloughi</span> Dog breed

The Sloughi, or Arabian Greyhound, is an ancient breed of domesticated dog, specifically a member of the sighthound family. It originates from North Africa and is found in Algeria, Tunisia, Morocco and Libya.

<span class="mw-page-title-main">Labrador Retriever</span> British breed of retriever gun dog

The Labrador Retriever, or simply Labrador, is a British breed of retriever gun dog. It was developed in the United Kingdom from St. John's water dogs imported from the colony of Newfoundland, and was named after the Labrador region of that colony. It is among the most commonly kept dogs in several countries, particularly in the European world.

<span class="mw-page-title-main">Dog breed</span> Group of closely related and visibly similar domestic dogs

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 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, skull shape, tail phenotype, fur type, body shape, and coat colour. However, there is 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 the last 200 years. As a result, today dogs are the most abundant carnivore species and are dispersed around the world.

<span class="mw-page-title-main">Shetland Sheepdog</span> Dog breed

The Shetland Sheepdog, also known as the Sheltie, is a breed of herding dog that originated in the Shetland Islands of Scotland. It was formally recognized by The Kennel Club in 1909. It was originally called the Shetland Collie, but this caused controversy amongst Rough Collie breeders of the time, so the name was changed. It is a small dog, clever, vocal, willing to please and trustworthy.

<span class="mw-page-title-main">Rhodesian Ridgeback</span> Dog breed

The Rhodesian Ridgeback is a large dog breed originally bred in Southern Africa. Its forebears can be traced to the semi-domesticated ridged hunting and guardian dogs of the Khoikhoi. These were interbred with European dogs by the early colonists of the Cape Colony for assisting in the hunting of lions.

<span class="mw-page-title-main">Chinese Crested Dog</span> Dog breed

The Chinese Crested Dog is a hairless breed of dog. Like most hairless dog breeds, the Chinese Crested Dog comes in two varieties, without hair and with hair, which can be born in the same litter: the hairless and the powderpuff.

<span class="mw-page-title-main">Staffordshire Bull Terrier</span> British breed of dog

The Staffordshire Bull Terrier, also called the Staffy or Stafford, is a purebred dog of small to medium size in the terrier group that originated in the northern parts of Birmingham and in the Black Country of Staffordshire, for which it is named. They descended from 19th-century bull terriers that were developed by crossing bulldogs with various terriers to create a generic type of dog generally known as bull and terriers. Staffords share the same ancestry with the modern Bull Terrier, although the two breeds developed along independent lines, and do not resemble each other. Modern Staffords more closely resemble the old type of bull terrier, and were first recognised as a purebred dog breed by The Kennel Club of Great Britain in 1935.

<span class="mw-page-title-main">Boxer (dog)</span> Dog breed

The Boxer is a medium to large, short-haired dog breed of mastiff-type, developed in Germany. The coat is smooth and tight-fitting; colors are fawn, brindled, or white, with or without white markings. Boxers are brachycephalic, have a square muzzle, mandibular prognathism, very strong jaws, and a powerful bite ideal for hanging on to large prey. The Boxer was bred from the Old English Bulldog and the now extinct Bullenbeisser, which became extinct by crossbreeding rather than by a decadence of the breed. The Boxer is a member of both The Kennel Club and American Kennel Club (AKC) Working Group.

<span class="mw-page-title-main">Goldendoodle</span> Dog breed

The Goldendoodle, also known as a Groodle, is a designer dog created by crossbreeding a Golden Retriever and a Poodle. First widely bred in the 1990s, they are bred in three different sizes—each corresponding to the size of Poodle used as a parent.

<span class="mw-page-title-main">Poodle</span> Dog breed

The Poodle, called the Pudel in German and the Caniche in French, is a breed of water dog. The breed is divided into four varieties based on size, the Standard Poodle, Medium Poodle, Miniature Poodle and Toy Poodle, although the Medium Poodle is not universally recognised. They have a distinctive thick, curly coat that comes in many colors and patterns, with only solid colors recognized by breed registries. Poodles are active and intelligent, and are particularly able to learn from humans. Poodles tend to live 10–18 years, with smaller varieties tending to live longer than larger ones.

<span class="mw-page-title-main">Mongrel</span> Dog with mixed breeds

A mongrel, mutt or mixed-breed dog is a dog that does not belong to one officially recognized breed, including those that result from intentional breeding. Although the term mixed-breed dog is sometimes preferred, many mongrels have no known purebred ancestors.

<span class="mw-page-title-main">Rat Terrier</span> Dog breed

The Rat Terrier is an American dog breed with a background as a farm dog and hunting companion. They share much ancestry with the small hunting dogs known as feists. Common throughout family farms in the 1920s and 1930s, they are now recognized by the United (UKC) and American Kennel Clubs (AKC) and are considered a rare breed. Rat Terriers are an intelligent and active breed that can be kept both for pest control and as a family pet.

<span class="mw-page-title-main">Peruvian Hairless Dog</span> Dog breed

The Peruvian Hairless Dog, Peruvian viringo, naked dog, or Chimú dog is one of several breeds of hairless dog. The breed comes in a variety of sizes and colors, including chocolate-brown, elephant-grey, and copper. They are sensitive to extreme temperatures and require special care due to their lack of fur, including protection from the sun and cold. Historically, they have been associated with the Inca Empire and are officially recognized as part of Peru's cultural heritage.

<span class="mw-page-title-main">French Bulldog</span> French breed of dog

The French Bulldog, French: Bouledogue Français, is a French breed of companion dog or toy dog. It appeared in Paris in the mid-nineteenth century, apparently the result of cross-breeding of Toy Bulldogs imported from England and local Parisian ratters. It is commonly kept as a pet, and is among the most frequently registered dogs in a number of countries including Australia, the United Kingdom, and the United States. The breed is prone to significant health issues as a consequence of breeding for their distinctive appearance, especially the brachycephalic face and skin wrinkles.

<span class="mw-page-title-main">Schnauzer</span> Dog breed type

A Schnauzer is a dog breed type that originated in Germany from the 14th to 16th centuries. The term comes from the German word for "snout" and means colloquially "moustache", or "whiskered snout", because of the dog's distinctively bearded snout. Initially it was called Wire-Haired Pinscher, while Schnauzer was adopted in 1879.

<span class="mw-page-title-main">Dobermann</span> Black and tan dog breed from Germany

The Dobermann is a German breed of medium-large domestic dog of pinscher type. It was originally bred in Thuringia in about 1890 by Louis Dobermann, a tax collector. It has a long muzzle and – ideally – an even and graceful gait. The ears were traditionally cropped and the tail docked, practices which are now illegal in many countries.

<span class="mw-page-title-main">Dutch Shepherd</span> Dog breed

The Dutch Shepherd is a herding dog of Dutch origin. They were used by shepherds and farmers who needed a versatile dog, with few demands, and a dog that was able to adapt to a harsh and meager existence.

<span class="mw-page-title-main">Hairless dog</span>

A hairless dog is a dog with a genetic disposition for hairlessness and hair loss. There are two known types of genetic hairlessness, a dominant and a recessive type. The dominant type is caused by ectodermal dysplasia as a result of a mutation in the FOXI3 autosomal gene.

<span class="mw-page-title-main">Dalmatian (dog)</span> Dog breed

The Dalmatian is a breed of dog, which has a white coat marked with black or brown-coloured spots. Originating as a hunting dog, it was also used as a carriage dog in its early days. The origins of this breed can be traced back to present-day Croatia and its historical region of Dalmatia. It is thought that early ancestors of the breed were certain breeds of pointers and a spotted Great Dane. Today, it is a popular pet and many enthusiasts enter Dalmatians into kennel club competitions.

<span class="mw-page-title-main">Chihuahua (dog)</span> Mexican breed of dog

The Chihuahua is a Mexican breed of toy dog. It is named for the Mexican state of Chihuahua and is among the smallest of all dog breeds. It is usually kept as a companion animal or for showing.

References

  1. FCI Breed Standard
  2. 1 2 3 Nahuatl Dictionary. (1997). Wired Humanities Project. University of Oregon. Retrieved September 1, 2012, from link Archived 2016-12-03 at the Wayback Machine
  3. 1 2 "GCH Bayshore's Giorgio Armani Leads the Way for Xoloitzcuintli Breed". Purina ProClub. Retrieved 11 April 2015.
  4. "vessel in form of a dog". Indianapolis Museum of Art Online Collection. Retrieved 2020-01-06.
  5. "Mexico is in love with a $5,000 hairless dog that often wins competitions — in the ugliest category". Los Angeles Times. 2017-04-28. Retrieved 2020-01-06.
  6. Coe, Sophie D. (1994) America's first cuisines ISBN   0-292-71159-X p112
  7. 1 2 3 Aguilar-Moreno, M. (2006). Handbook to life in the Aztec world. Oxford University Press: USA. p. 329 ISBN   978-0-19-533083-0
  8. Vila, C. (1 January 1999). "Phylogenetic relationships, evolution, and genetic diversity of the domestic dog". Journal of Heredity. 90 (1): 71–77. doi: 10.1093/jhered/90.1.71 . PMID   9987908.
  9. Ní Leathlobhair, Máire; Perri, Angela R.; Irving-Pease, Evan K.; Witt, Kelsey E.; Linderholm, Anna; Haile, James; Lebrasseur, Ophelie; Ameen, Carly; Blick, Jeffrey; Boyko, Adam R.; Brace, Selina; Cortes, Yahaira Nunes; Crockford, Susan J.; Devault, Alison; Dimopoulos, Evangelos A.; Eldridge, Morley; Enk, Jacob; Gopalakrishnan, Shyam; Gori, Kevin; Grimes, Vaughan; Guiry, Eric; Hansen, Anders J.; Hulme-Beaman, Ardern; Johnson, John; Kitchen, Andrew; Kasparov, Aleksei K.; Kwon, Young-Mi; Nikolskiy, Pavel A.; Lope, Carlos Peraza; Manin, Aurélie; Martin, Terrance; Meyer, Michael; Myers, Kelsey Noack; Omura, Mark; Rouillard, Jean-Marie; Pavlova, Elena Y.; Sciulli, Paul; Sinding, Mikkel-Holger S.; Strakova, Andrea; Ivanova, Varvara V.; Widga, Christopher; Willerslev, Eske; Pitulko, Vladimir V.; Barnes, Ian; Gilbert, M. Thomas P.; Dobney, Keith M.; Malhi, Ripan S.; Murchison, Elizabeth P.; Larson, Greger; Frantz, Laurent A. F. (6 July 2018). "The evolutionary history of dogs in the Americas". Science. 361 (6397): 81–85. Bibcode:2018Sci...361...81N. doi: 10.1126/science.aao4776 . PMC   7116273 . PMID   29976825. S2CID   206663458.
  10. Bergström, Anders; Frantz, Laurent; Schmidt, Ryan; Ersmark, Erik; Lebrasseur, Ophelie; Girdland-Flink, Linus; Lin, Audrey T.; Storå, Jan; Sjögren, Karl-Göran; Anthony, David; Antipina, Ekaterina; Amiri, Sarieh; Bar-Oz, Guy; Bazaliiskii, Vladimir I.; Bulatović, Jelena; Brown, Dorcas; Carmagnini, Alberto; Davy, Tom; Fedorov, Sergey; Fiore, Ivana; Fulton, Deirdre; Germonpré, Mietje; Haile, James; Irving-Pease, Evan K.; Jamieson, Alexandra; Janssens, Luc; Kirillova, Irina; Horwitz, Liora Kolska; Kuzmanovic-Cvetković, Julka; Kuzmin, Yaroslav; Losey, Robert J.; Dizdar, Daria Ložnjak; Mashkour, Marjan; Novak, Mario; Onar, Vedat; Orton, David; Pasaric, Maja; Radivojevic, Miljana; Rajkovic, Dragana; Roberts, Benjamin; Ryan, Hannah; Sablin, Mikhail (2020). "Origins and genetic legacy of prehistoric dogs". Science. 370 (6516): 557–564. doi:10.1126/science.aba9572. PMC   7116352 . PMID   33122379. S2CID   225956269.
  11. Manin, Aurélie; Ollivier, Morgane; Bastian, Fabiola; Zazzo, Antoine; Tombret, Olivier; Equihua Manrique, Juan Carlos; Lefèvre, Christine (October 2018). "Can we identify the Mexican hairless dog in the archaeological record? Morphological and genetic insights from Tizayuca, Basin of Mexico" (PDF). Journal of Archaeological Science. 98: 128–136. Bibcode:2018JArSc..98..128M. doi:10.1016/j.jas.2018.08.008. S2CID   135348745.
  12. "Xoloitzcuintli Dog Breed Information". American Kennel Club. Retrieved 2023-04-21.
  13. National Xolo Rescue Archived June 26, 2010, at the Wayback Machine at the XCA website
  14. Xolo News Archived 2010-01-13 at the Wayback Machine at AKC.org
  15. Kimura, T.; Ohshima, S.; Doi, K. (1 January 1993). "The inheritance and breeding results of hairless descendants of Mexican hairless dogs". Laboratory Animals. 27 (1): 55–58. doi:10.1258/002367793781082403. PMID   8437436. S2CID   21822477.
  16. "FCI-Standard N° 234: XOLOITZCUINTLE (Hairless Variety & Coated Variety)". Fédération Cynologique Internationale. 2011-02-16. Archived from the original on 2013-11-01. Retrieved 2012-08-20.
  17. "xoloitzcuintliclubofamerica.com". Archived from the original on May 27, 2008.
  18. Drögemüller, Cord; Karlsson, Elinor K.; Hytönen, Marjo K.; Perloski, Michele; Dolf, Gaudenz; Sainio, Kirsi; Lohi, Hannes; Lindblad-Toh, Kerstin; Leeb, Tosso (12 September 2008). "A Mutation in Hairless Dogs Implicates FOXI3 in Ectodermal Development". Science. 321 (5895): 1462. Bibcode:2008Sci...321.1462D. doi:10.1126/science.1162525. PMID   18787161. S2CID   206514824.
  19. "Official Standard of the Xoloitzcuintli" (PDF). American Kennel Club . 2004-06-20. Retrieved 2023-09-25.
  20. Kimura, Tohru; Doi, Kunio (1996). "Spontaneous Comedones on the Skin of Hairless Descendants of Mexican Hairless Dogs". Experimental Animals. 45 (4): 377–384. doi: 10.1538/expanim.45.377 . PMID   8902502.
  21. Kimura, Tohru (1996). "Studies on Development of Hairless Descendants of Mexican Hairless Dogs and Their Usefulness in Dermatological Science". Experimental Animals. 45 (1): 1–13. doi: 10.1538/expanim.45.1 . PMID   8689575.
  22. 1 2 Serrato, Jacqueline (17 November 2017). "Aztec dog gains popularity in US after 'Coco'". chicagotribune.com. Retrieved 2020-10-23.
  23. "Museo de El Carmen inaugura expo sobre los xolos por el Día de Muertos". www.milenio.com. 17 October 2019. Retrieved 2020-01-07.
  24. "Xoloitzcuintle patrimonio de la CDMX", El Universal , August 12, 2016
  25. "Xoloitzcuintle, el perro azteca, patrimonio de la CDMX". Excélsior (in Spanish). 2016-08-12. Retrieved 2020-01-06.
  26. "Museo Dolores Olmedo y sus xoloitzcuintles: todo lo que debes saber antes de visitarlo". El Universal (in Spanish). 2019-11-04. Retrieved 2020-10-23.
  27. "Frida Kahlo and her Itzcuintli Dogs".
  28. "Presentación del nuevo billete de quinientos pesos" (PDF). Bank of Mexico . Archived from the original (PDF) on 23 September 2010. Retrieved 11 September 2010.
  29. Rivera, Luis-Martin Lozano & Juan Rafael Coronel. Diego Rivera The Complete Murals. Italy: TASCHEN GmbH, 2008. Print

Further reading