Hairless dog


Hairless dog

A hairless dog is a dog with a genetic disposition for hairlessness. There are two known types of genetic hairlessness, a dominant and a recessive type.

Dominant genes

Dogs with dominant genes for hairlessness can pass their attributes to their offspring in natural conditions, that is, not under the control of humans. Therefore, it is possible that, in some parts of the world, groups of hairless dogs came into existence without human intervention. Later in history, people developed these groups into a recognized breed.Worldwide recognized breeds at this time are the Chinese Crested Dog, the Mexican Hairless Dog, and the Peruvian Hairless Dog.The American Hairless Terrier is recognized only in some parts of north America.Other breeds there are said to exist are the Hairless Khala, African Hairless Dog (also known as the Abyssinian Sand Terrier, Egyptian Hairless Dog and Elephant Dog, the last being a reference to its grey skin) and the Thai Hairless Dog.

This type of genetic structure is said to be homozygous lethal for the dominant gene. This means that dogs with two dominant genes cannot live. Therefore, all dominant-hairless dogs have a heterozygous gene structure. There is also a homozygous recessive type, which is a coated variety.

For dogs where hairlessness is a dominant gene, hairless to hairless matings will on average produce 66.6% hairless and 33.3% coated puppies. For hairless to coated matings, there will be an average of 50%/50% coated to hairless ratio, while for coated to coated matings, all puppies will be coated [ [http://www.chinesecrested.no/en/articles/breeding/Genetics+part+II.+Defining+and+calculating+traits.html Genetics part II: Defining and calculating traits] ]

The Chinese Crested coated variety is called "Powder Puff", and is a recognized type. For the other breeds coated varieties are called "coated" and are not recognized as valid varieties for conformation showing.

References


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Mexican Hairless Dog — Not to be confused with Peruvian Hairless Dog. Mexican Hairless Dog File:Mexico.Xoloitzcuintli.01.jpg Group of three Mexican Hairless Dogs Other names Xoloitzcuintli Xoloitzcuintle Xoloitzquintle Nicknames Xolo AKCgroup Miscellaneous Country of… …   Wikipedia

  • Peruvian Hairless Dog — Infobox Dogbreed akcfss = part of the akc fss akcgroup = Hound (FSS)le akcstd = ? altname = Perro Sin Pelo del Perú Inca Hairless Dog Viringo country = flagicon|Peru Peru fcigroup = 5 fcinum = 310 fcisection = 6 fcistd =… …   Wikipedia

  • Dog anatomy — includes the same internal structures that are in humans. Details of structures vary tremendously from breed to breed, more than in any other animal species, wild or domesticated,[1] as dogs vary from the tiny Chihuahua to the giant Irish… …   Wikipedia

  • Dog type — For a list of dog types, see List of dog types. Cart dogs, c. 1900. Different in appearance but doing the same work. Dog types are broad categories of dogs based on function,[1] with dogs identified primarily by specific function or style of work …   Wikipedia

  • Dog breeds and their places of origin — ▪ Table Dog breeds and their places of origin continent country breed North America Canada Labrador retriever, Eskimo dog, Nova Scotia duck tolling retriever, Newfoundland Cuba Havanese Mexico Chihuahua, Mexican hairless United States Alaskan… …   Universalium

  • Dog meat — This article is about human consumption of dog flesh and parts. For meat eaten by dogs themselves, see Dog food. Dogmeat redirects here. For the character in the Fallout series of video games, see Fallout 3. Dog meat on sale at the Kyungdong… …   Wikipedia

  • dog — I (New American Roget s College Thesaurus) n. canine, cur, whelp; pup[py], tyke, bitch, slut; doggy (inf.); pooch, mutt (both sl.). See animal. II (Roget s IV) n. 1. [A domestic animal] Syn. hound, puppy, canine, mongrel, cur, canis familiaris… …   English dictionary for students

  • Dog park — The recently renovated Tompkins Square Park dog run was the first in New York City, and it was recently named one of the top five dog parks in the United States by Dog Fancy magazine. This article is about the exercise area for dogs; there is… …   Wikipedia

  • dog — dogless, adj. doglike, adj. /dawg, dog/, n., v., dogged, dogging. n. 1. a domesticated canid, Canis familiaris, bred in many varieties. 2. any carnivore of the dogfamily Canidae, having prominent canine teeth and, in the wild state, a long and… …   Universalium

  • Dog breed — For a list of dog breeds, see List of dog breeds. Chihuahua mix and purebred Great Dane Dog breeds are groups of closely related and visibly similar domestic dogs, which are all of the subspecies Canis lupus familiaris, having characteristic… …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.