The Jindo Dog > Generic Appearance > Coat
 
 

Coat Quality
 

Jindos should have at minimum a double-layer coat.  They should have an outer layer of guard hairs and an inner layer of undercoat.

There is sometimes references to a "3-hair dog."  I believe this might refer to 1) regular undercoat, 2) regular guard hairs, and 3) scattering of extra-long guard hairs.    Not a lot of Jindos, especially white Jindos, have the extra-long guard hairs these days.
 
 

On this red dog, the overall coat goes from white at the skin to black on the middle to red on the tips.  There are a few extra-long black guard hairs, but it is difficult to photograph. 

photo by Ann Kim

The outer layer  of guard hairs is smooth, shiny, stiff, and water-proof while the inner layer  of undercoat is soft, slighty crinkly, and insulating.
 
 
 
 
 

Another look at the guard hairs (sharply defined, colored) and undercoat (fuzzy, hard to see)

photo by Ann Kim


 
 

Unspayed females tend to shed their guard hairs more than males.  The undercoat is blown on average twice a year, with the heavier shed in the spring and the lighter one in the fall.  The shed can be triggered by hormones, a change in diet, stress, and even the change in the amount of daylight.

A sign of a good, thick undercoat is the fur coming off in clumps during the shed.  To a certain extent, weather has an effect on the thickness of the undercoat, but it should not affect the quantity or length of the guard hairs.

Medium length guard hairs are preferred with longer hairs on the shoulders and tail.
 
 

Tail fur (mostly guard hair), Shoulder fur, and Body fur

photo by Ann Kim


 
 
 

The abundance of long stiff guard hairs gives the tail the fan form.

photo by Ann Kim

The hairs are lifted somewhat away from the body.  Dogs with hairs that lay flat against the body are not desired.
 
 

Fur is angled away from the body

photo by Ann Kim

I've seen written that average size dogs should have hairs 1-2 inches in length, especially on their shoulders.  Even though dogs with shorter length coat are present in the breed, they are not as desired since it does not protect the dog as effectively from cold and brushwood during a hunt.  Similarly, dogs lacking an undercoat or having a soft outer coat are not desired for the same reason.
 
 

shorter length fur

from Jindok Gae by Yoon (pg. 135)

There is a small percentage of Jindos with long, wavy or wooly hair.

slightly long fur

from Hankookea Toejonggae by Ha & Yim (pg.92)

I don't know if these coats are generally considered a fault or not, but I assume that dogs with wooly coats (soft undercoat is much longer than guard hairs) are not desired since it would allow ice to cling to the fur or the dog could become soaked to the skin by water.
 


Coat Color

There are two components that give a Jindo its overall color.  They are the color of the guard hairs and the color of the undercoat.  The color of the undercoat is more important in the black-colored dogs as it can give clues as to whether the dog is a purebred Jindo or a mix.  The color of the guard hairs is usually what most people notice, though, and so the genetics of their colors will be touched upon.

The coat colors that were historically protected by the Japanese and then Korean government were yellow and white.  However, the selection of only just these two colors was inaccurate.  Other coat colors existed in Jindos and these colors were barely preserved until the protection law was revised in 2/23/98, protecting other colors.

There are five colors that seem to be universally accepted in the Korean Jindo dog now.   A few others remain controversial.

1)  HwangGu :  yellow
2)  BaekGu :  white
3)  NaeNunBakYi or HeukGal :  black & tan
4)  JaeGu :  wolf-grey
5)  HoGu or HoPi :  tiger-brindle

Details on each color will be covered a bit further down in this section.
 


Spotting

At birth, white skin/fur on the toes, chest, or chin can occur in colored dogs.   However, excessive white spots is not really considered proper.  Too much spotting may lead to pinto dogs which is highly undesirable.  There is a slight preference against dogs with these spots, as there are some people who desire black nails in their yellow dogs.
 
 

There are no colored Jindos that I know of that have white skin/fur on the tip of their tail.
 


Ghosting

As adults, minor spotting usually becomes less noticeable on yellow-colored dogs when the adult fur grows in and  white "ghosting" appears.  The skin underneath may be black, but the fur is white.  "Ghosting" is the American term for the underside of the dog and portions of the face being white.  The Japanese term is "urajiro."

Not all dogs will show this "ghosting" pattern clearly if at all.  This isn't as big of a concern in Jindos as it is in the Japanese breeds.   However, too much white on a yellow dog might indicate some Japanese Akita Inu influence and the dog should be examined carefully for the presence of other Akita features.
 
 

"RaBee" 

the most familiar color distribution of a Jindo
circa 1989

(photo's contrast was increased & brightness was reduced to emphasize pattern)

Japanese-style Akita


Masking

Yellow puppies are born dark brown with a very dark or black face.  The color lightens and the mask on the face usually disappears as the puppy matures.
 
 

However, there are a few adult Jindos who retain black on the edge of their muzzles or a slightly smutty face (not as dark as an American Akita though).   Some people believe this to be indicative of mix breeding (shepherd, akita, etc.) , while others believe it is a throwback to the Jindo's ancestors from Mongolia.
 


  HwangGu

(yellow, wheaten red, red on white bicolor, orange, fawn, tan)

HwangGu is the most prevalent color among Jindos.

Literally, hwang means yellow.   Hwang has been equated with "red", a term that is based on dog lingo and genetic lingo, but Jindos do not have red coats such as found in an Irish Setter.      Hwanggu's has been used to encompass dogs possessing a wide variety of shades.  The color ranges from red to orange-yellow to fawn/tan.  This variation is dependent on the genetic composition of the dog.  Dogs that have cream in their background tend to be lighter in color than those with no cream.  Those carrying black/tan genes are more brown/tan.  Some dogs might have a scattering of black guard hairs, but it is not considered a  Jaegu or grey Jindo without the blueish sheen in the sun.  The preferred color for Hwanggu's is the same color as a field of barley.
 
 
 
Probably too red/brown 
(Lighting can affect perceived color)
Good Color for a HwangGu Probably too pale

Dog also has a reverse mask which isn't preferred.

 

The red gene is located on the same locus as the black & tan gene (the Agouti locus) and is usually more dominant of the two.
 

(Ay = red or Agouti yellow gene,  at = black&tan gene)


So, a HwangGu would either be an AyAy or an Ay at.
 
 
 

from Hankookea Toejonggae by Ha & Yim (pg.120)

Since Hwanggu is the most common color, most impure Jindos fall under this catagory.   Besides mixes with Japanese dogs, other breeds mixed in with Jindos and yet sold as pure are Chows, German Shepherds, and pitbulls.  In general, Jindo genes are very dominant and so these mixes are not always recognized easily by a novice.

 
Baekgu

(white, cream)
 

BaekGu is the second most common coat color.  It would be inaccurate if described as a rare color.   It is simply due to a recessive gene. The Jindo County Office states white coat color is due to the albino gene. To clear up any misunderstanding, I would like to add that this gene is also called chinchilla-dilute by other breeds.  This chinchilla-dilute acts upon the normally red hairs to lighten it to a cream- or buff-colored coat.  Sometimes, the areas that usually have a concentration of black hairs, such as the back of the ears and down the spine, are less affected and are lightened instead to a slight red/tan.

The red color on the ears and back of the hind legs is not as preferred by Jindo islanders (source: Mr. Tae Young Yim).
 
 
 

Probably Too Muddy
(Lighting can affect perceived color)
Typical BaekGu  White Desired by Jindo Island

Body has reddish tinge.

Body is white
Red highlights are found on ears, tail, and back of legs.

Body is white.
Red highlights are missing on legs.

Body has reddish tinge.

Red-tipped ears

Unusual, all-white ears

 
 

Baekgu dogs usually have pigmented black skin on their eye rims, lips and other portions of their body except their nose.   Their noses are typically faded pink.  The chinchilla-dilute gene is located on a different locus than the red and black/tan gene, called either the albino locus or the chinchilla locus.  It is recessive to full pigmentation.
 

(C = full pigmentation, cch = chinchilla-dilute)


A dog must carry at least one red gene (AyAy or Ayat) and two copies of the chinchilla-dilute gene (cchcch) in order to be a BaekGu.

Brillant-white, snow-white or grey-whites dogs can be indicative of Japanese Kishu blood and so these variations of white are frowned upon.   Based on mouse-studies, it's speculated that a third gene, called chinchilla-dilute extreme, could be the cause of these whites.
 

(ce = chinchilla-dilute extreme)


The chinchilla-dilute extreme acts upon red dogs to make them very white (AyAy, cece or Ayat, cece)   while it would act upon black&tan dogs to make them beige with red highlights (atat, cece).
 

Baekgu Jindos and nearly all dog breeds do not have pink eyes, brillant white coat, and all pink leather that is associated with albino rodents and rabbits.  If ever a pink-eyed albino Jindo is produced, they should not be breed at all since these dogs are sensitive to light and would spread this genetic disease to the general Jindo population.

White dogs with blues eyes are considered mixes and/or may have a form of albinoism called tyrosine-negative albinoism.  These should also not be bred as examples of tyrosine-negative albinoism in other breeds and animals are linked to genetic diseases as well.
 

(c = albinoism)


In stories, white Jindos with grey eyes used to occur very infrequently and were sometimes regarded as throwbacks to wolves, but this combination is considered extinct in the breed now.  Also in stories is the baekgu coat with black hairs on the back.  This is supposed to be a very good baekgu coat, but without pictures or more detailed descriptions, I'm not quite sure what the genetic makeup behind this is yet.   Perhaps a exploration into Siberian husky color genetics might reveal a little more info.   I'm going to make a leap and guess that the reason why this coat might be considered good is because it's likely to be connected to the correct coat texture.  I remember reading that red Shibas were starting to loose the harsh, correct coat and that breeding back to black/tan Shibas restored the texture.

The mixes that need to be screened against among the BaekGu's  are predominantly Jindo-Kishu mixes, sometimes with a bit of a mastiff (akita?) tossed in.  These types of mixes are called "MilYang gaes"  and it takes an experienced eye in both Jindos and Kishus to distinguish one from a Jindo.  These have primarily fighting temperaments.  The origin of the "a Jindo biting a person must be a Kishu mix" generalization might have its origins with the MilYang gaes?
 
 

Examples of pure Japanese Kishus

an adult show male Kishu
Photo: NIPPO

a young male Kishu
Photo: Rene Hesselman

 
 
 
 
2/11/07 UPDATE:  There are some canine geneticists that are very skeptical that the white or cream color is caused by different alleles on the C loci.  Instead, they believe that the Baekgu is caused by different alleles on the E loci.

The E loci is the gene that determines the yellow color in labradors and white color in poodles and German Shepherds.

(E = normal pigmentation, e = recessive yellow, recessive white)
Using this assumption, a dog would need to be ee in order to be white/cream.   The effect of this gene dominates over the effects of other genes, essentially removing all black pigment from the coat.

Most likely, there is a closely linked modifier that lightens the recessive labrador yellow color to the familiar Baekgu color.   In addition, there might be a modifier that that intensifies some reddish highlights, causing muddy Baekgus.

There are genetic tests to determine if a dog carries E or e, but I am unaware of any Baekgu owners who have tested to make sure.   I think that perhaps e could potentially exist in Jindos.  One thing to note is that the presence of e in the breed doesn't necessarily exclude the possibility of a chinchilla-dilute gene existing and being in effect.
Breedings between purebred white Jindos (not mixes who could be carrying  atatee)  and black/tan dogs resulting in only white and black/tan puppies support the existance of a black-pigment reducing gene like e or even ce .  Breedings between white dogs and black/tan dogs resulting in only red and white puppies support the existance of a red-pigment reducing gene like cch.
 

Perhaps if I had more family trees that traced the different colors throughout the generations, it would be possible to determine if e, recessive yellow, is in effect vs. cch, chinchilla dilute, in the majority of the Baekgu Jindos.  The first has an effect on black coat pigment.  The latter does not.  Of course, if there exists chinchilla-extreme, ce , it would be difficult  to differentiate between it and recessive yellow, e, without photos and the monitoring of color as the dog ages. 

For now, I'll continue to use chinchilla-dilute as the explanation for white/cream Jindo color genetics until further information is provided. 
 

Naenunbakyi or Heukgal

(black & tan bicolor)
 

Photos by Mr. Woo, Mu Jong of the Korean National Dog Association.(p.18, 42, 83)

The term Naenunbakyi literally means four eyes.

The number of black on tan Jindos was alarmingly low a decade ago due to the Korean government historically recognizing only red and white Jindos.  However, their popularity has skyrocketed in the past decade, mostly due to the efforts of Mr. Woo, Mu Jong of the KNDA promoting the benefits of black skin pigment in dogs.

The Naenunbakyi's are the third most common color among Jindos now.

The black & tan markings on the dog should be clearly defined.  The tan portions on the dog can be completely tan or it fade into white.

Genetically, the black & tan markings are caused by  atat.

The tan fading into the white is determined by whether the dog has any cch genes.
 

The KNDA says, "this type is very important for the stabilization of pigments."   From a limited number of test breedings, this color seems to restore the black noses on white dogs and give a brown-fawn color on red dogs. However, there isn't a consensus that this validates black-nosed white dogs as of yet.
 

The most serious problem with the black & tans is the suspicious explosion of their numbers.  According to one observer in Korea, it used to be that no one had a black & tan dog and then in the span of two years, almost every single kennel in Korea had one.   The "optomistic" explanation is that this is due to intensive in-breeding and over-utilization of black&tan sires or carriers of the black&tan gene.   (It's ironic that in the quest to regain black skin pigment to improve skin problems, the dog's immunity has been weakened with the narrowing of the gene pool.)

The more depressing explanation is that people have utilized foreign breeds, such as the Japanese Shiba, the Doberman,  and Rottweiler, to reintroduce this color.   This explanation is especially real (and painful) when one actually sees obviously mixed dogs being promoted in various Jindo publications as purebred Jindos.  Jindo-Doberman mixes typically reveal themselves in their "unnatural" feel, their "thin" impression, and odd colors similar to those found in red-, blue-, and isabella-colored Dobermans.  These are colors that require dilution genes that are not normally found in Jindos.   Jindo-Rottweiler mixes are very obvious in the first generation, especially in the head, but subsequent generations are harder to pick out as the Rottweiler's thickness meshes well with the Jindo's thickness.  Both types of mixes will sometimes reveal themselves in the quality of their coats and the tinge of their color.
 
 

Jaegu

(grey, wolf-colored, ash, sesame?)
 

It's my opinion that the Jaegu appears to be the most complicated color in the Jindo breed.   I believe there are several genes and gene combinations that give rise to the dogs that are referred to as Jaegu.   The one trait that ties them together is the appearance of red, black, and white hairs.

The most common Jaegu is one that is due to Ay atThis is the most common because the distribution of the black/tan gene, at , has skytrocketed in the Jindo gene pool, and of course, there has always been yellow Jindos with  Ay  around.

Ideally, according to Jindo county residents, a Jaegu has darker fur covers the upper portion of the body and head.  Also, in the sun, the coat looks blue (look under fur to see what I mean). It is incorrect to state any red Jindo with black fur is a Jaegu. It must have the bluish sheen in sun or else it is referred to as Hwanggu or black-haired Hwanggu.  I've noticed that with these dogs, the dark pattern usually appears as a widow's peak on the forehead.  Here are what I think are examples of this gene combination:

Jindo County Greys
Grey female from Mr. Kang's site
Grey female from Mr. Kang's site
 Close-up of fur from Mr. Kang's site
 

Greys photographed by Mr. Yim, Yin Hak
a grey female
another picture of a grey female




It can be difficult and/or unpredictable to produce this grey.  There is something else that varies the expression of this combination, something that causes Ay to be completely dominant some times while in other times, causes it to be incompletely dominant.

In Japanese Shibas, there's a belief that there is a modifier affecting the expression of sesame Shibas.   I believe something similar exist in Jindos.

Ay at  plus another set of modifer genes


Here are some examples of what could be modifiers varying three dogs' appearance though they all share Ay at  genes.
 

"BoRee" - Ayat, Ccch

father - black& tan - atat, Ccch
mother - white - Ay ?, cchcch

photo by Bruce Kwon?

"Ari" -  Ay at, Ccch

father - white - Ay ?, cchcch
mother - black&tan - atat, Ccch

photo by Ann Kim
 

"Ranger" - Ay at, C ?

father - black&tan - atat, C ?
mother - red - Ay ?, C ?

photo by Johnathan Lee

It is this little understood modifer  that makes a correctly-marked Jaegu (or correctly-marked sesame Shiba) difficult to obtain.
 
 

A less common Jaegu is probably caused by another gene which can be masked if present in the other Jindo colors.   This gene is not present in the majority of the dog breeds in the world, but it is still present in wolves, German Shepherds, and some less commericalized spitzes and livestock guardians.  I believe the Japanese Shikoku also naturally carries this gene.
 
 


Examples of Japanese Shikoku at a NIPPO show in Japan.

 
 
 

I think I was informed that this gene is recessive to Ay and semi-dominant to at?

(Ay = red or Agouti yellow gene  <   ag = agouti-grey  gene <  at = black&tan gene)
Sometimes the gene is denoted as A, which is an acknowledgement that the gene is wild-type (ie. from wolves).

A trademark of this gene is for the "grey" to extend as a full mask and not just as a widow's peak.   Eye spots can be faintly visible in most dogs.   The Korean National Dog Association had examples of this in their 1996 KNDA hardcover book.
 
 

Photos by  Mr. Woo of the Korean
National Dog Association.(pg.32 ,227)

A male Jindo posted on the KNDA webboard

The two dogs on the left might also have some other genes their background which would account for their less vibrant color when compared to actual wolves.

Since one type of the Jaegu requires a black&tan gene, problems with black&tan mixes are shared with this color.  In addition, German shepherd-Jindo mixes are sometimes mistaken for Jaegu.
 
 
 


When is a Jaegu Jindo not a grey Jindo? 

According to the oldtimers on the island, there is another color called Jaegu or "wolf-color." 


"Cheesecake", owned by Mr. Lim, Ik Ho 

This type of Jaegu appears as a normal baekgu Jindo at birth, but instead of becoming lighter as the dog matures, the coat become darker and redder.  It's believed that this dog would have grown the normal Jaegu grey color, but because it was lacking the desired black pigments (ie. loss of the black&tan genes), it turned this color instead.    (source:  Yoon, June Ho)

Based on mouse studies and the Jaegu connection, this color is speculated to be cause by the chichilla-dilute extreme genes acting on a black&tan dog.

atat, ce ce


 

Hogu or Hopi

(tiger pattern, red-brindle, brindle)
 
 


Photo by  Mr. Woo of the Korean
National Dog Association.(p.69)

The term "Ho" is associated with tiger.  The 1988 Seoul Olympics had a tiger mascot named Hodori.  The Korean name for tiger is Horangyi.

This coat appears in the Jindo as a red background with thin, clearly defined black lines running vertically through the body.  Puppies should show brindling at a young age.  This used to be considered a rare color, but numbers are increasing very rapidly as brindling is passed down via a dominant gene, Ebr.

So, the gene combinations that give rise to red-brindles are as follows:

AyAyor Ayat with either  EbrEbror EbrE.
 

It's theoretically possible to have a brindled black&tan (brindling shown on the tan legs), but these are probably just labeled Naenunbakyi's.   Their genes would be the following: atat with either   EbrEbror EbrE.

The mixes to beware of are Kai-Jindo mixes.   Stance, eye shape/position, and coloring are just a few of the features to look for.  Red-brindled Kai's and highly-colored black-brindled Kai's tend to have blurrier lines than Jindos.
 
 

Japanese Kai Korean Jindo

CH. Walnut Valley's Mavrik O' MM owned by Classy Kennel 
Photo: Marian Campbell

HoJinYi
photo posted by Woo Joo Sung on the KNDA board

Sony
Photo: Colorado Shiba Rescue

PoHang

a young black-brindle female Kai, Dolly
the brindling pattern appears after multiple sheds
Photo: Marian Campbell

A young Jindo 
from Jindok Gae by Yoon (p. 125)

Recently, the number of brindled Akita-Jindo mixes have increased.  Their stripes tend to be distinct and their base color is not as dark as Kai and Kai-Jindo mixes.  Head style can range from resembling Japanese Akita to American Akita.
 
 
 


Extinct Hogu?
 

There is some contention, in the minority, that believes that this color is extinct in purebred Jindos (due to the inaccurate old protection law) and the ones seen today are the result of mixings. 

There is some merit to that theory as unlike the black&tans and greys, the brindle color is expressed dominantly and it is very easy to breed out dominant colors more than recessive colors.  However, the interaction of one of the brindle genes with both copies of the chinchilla-dilute gene is unknown in Jindos.   There are no pictures of white dogs with stripes (at least, not that I know of) and if the chinchilla-dilute can truly repress the expression of brindling, then it is feasible that purebred hogu Jindos can "reappear" out of the traditionally white lines outcrossed to red dogs.  Just my opinion, again. 

Update: There has been a report of a white hogu that was born, but the puppy was soon stolen from the breeder. 
 


 
4/9/05 UPDATE:  According to some canine geneticists, the brindle gene does not exist on the E loci.  However, the actual location is unknown.  The brindle gene still follows the dominant mode of expression though.

 
 

Heukgu

(solid black)
 
 

Do you know who took my picture?
a black Jindo from the old Jindo Country site

original source unknown

a solid black photographed by Mr Yim, Yin Hak



Black is an uncommon color for a Jindo, but it's not due to genetics.  Puzzlingly, it seems to be the least favorite color among organizations as about half of the various Jindo organizations do not recognize it as a valid color.  In general, the average Koreans also do not like the color.  I don't understand the unpopularity of the color. Superstition maybe?

In the late 1990's, I was told by one organization that there are no accounts of solid black Jindos in historical records and the "recent" appearance of this color is due to Chow-Chow mix blood.   Although I didn't doubt the absense of those records (there aren't many about Jindos in general and "black" could be confused with "black & tan"),  I wasn't too convinced.  Among wild canines such as wolves and Dingos, solid black is considered a valid "primitive" color.  The Chejudo dog comes in solid black.

In 2001, that particular organization softened its position to state that solid black pure Jindos are hard to find among the Chow-Chow and Japanese breed mixes (ie. Kai).

An independent oldtimer tells me that there are certain characteristics of solid black Jindos that should be present and are lacking in the black dogs seen these days.  The first thing that should be noted is that black Jindos are not solid black.  They should be edged with white under the armpits, behind the legs, and in the private areas.   I think this is caused by the peaking of the lighter colored undercoat through the fur?

The thick undercoat must be present.  Some people have mistaken lab mixes as black Jindos, but analysis of the coat would have ruled it out.  Simple fur, laying flat or short in length,  instead of the medium-length double-layer is a sign that the dog is not a Jindo.

I speculated years ago that maybe the solid black on the Jindo is a version of black-brindle, just like it would be on a Kai.  Due to the input of a Jindo judge who has seen a "black-brindle Jindo", I'm leaning towards the position that black-brindles should not exist in the Jindo breed now.   I'm hoping that the expected Kai book in English will have the information I need to resolve this theory.
 

Because solid black is such a controversial color, I strongly recommend that deliberate breeders of solid black Jindos breed very carefully and very closely to their preferred Jindo standard.   Afterall, nothing undermines the pro-black stance than people presenting black 'Jindos' that don't even look or act like Jindos.

In dogs, the solid black coat color can be caused by either a dominant or recessive gene.   Further study on this color would be need within Jindos, but it appears to be recessive to the red gene.
 

BaDukYi?

(Pinto)

Pinto is a controversial pattern.  Although there is growing acceptance that it occurs in Jindos, there is still strong sentiment that no pure Jindo should resemble the common Korean street mongrel located on the mainland.  The mongrel is called BaDukYi, which is like "puppy" or "doggie" in English expression.

Pinto is the result of a white-patterning gene that is in the same family as piebald, pure white (associated with deafness),  white-spotting, etc.    It is usually a recessive gene to full color, but it has an accumulative effect.  Continually breeding mis-marked Jindos with white socks to each other will sometimes produce a pinto.

I don't advocate that people try to breed for pintos.  There is a narrow range whereby a pinto can be ethically produced, with too much white possibly leading to deafness or at least pinker skin, and too little white leading to undesirable dogs with white socks/tails.

Most Jindo organizations do not recognize pinto.
 

For more details on the genetics of coat colors, goto Canine Coat Color or Coat Color Genetics.

In summary, here are my assumptions regarding the genetics behind the Jindo's coat color:

A, the agouti series:
AyAy Hwanggu
Ayat Hwanggu, darker with more black hairs
Some kinds of Jaegu might fall under here
Ay is incompletely dominant over at
atat Naenunbaky/Heukgal
Black with tan points
awaw ? I don't think this gene is found in Jindos or is the cause of Jaegu?
The color is described as "salt&pepper" such as found on the Norwegian Elkhound.
The tan is replaced by a pale cream to pale gray color
The hairs are normally banded - not just the scattering of black-tipped hairs sometimes seen in a sable, but several bands of alternating light and black pigment along the length of the hair.

 

C, the albino series:
CC full color
Ccch should be full color
theorized that there's an incomplete dominance relationship
cchcch dilution of red color
partial dilution of black
cch is called chincilla-dilute
Unlike albino cc which cannot produce working tyrosinase, these dogs should be free from the defect
cece chinchilla-dilute extreme.  A theorized gene that makes red animals starkly white and black&tan animals buff in color.

Some Possible Effects of cchcch

AyAycchcch Baekgu.  Dogs are creamy-white with occassional streaks of red/tan behind the ears and along the back (areas where hairs would normally be darker on a Hwanggu).  Likely to have flesh-colored nose.
Ayatcchcch Baekgu.   Possible to have black-colored noses?
atatcchcch Naenunbakyi/Heukgal. Black & tan with the tan portions faded into white.

Some kinds of faded/bluish black&tan, like the KNDA's Jaegu?

AyAy cece

or

Ayat cece

Theorized.

"Kishu" white?  Brillant snow-white coat with black skin pigments and black nose.

atat cece Theorized.

The beige-colored Jaegu with flesh-colored nose?  Dogs gets redder as they age. 


 

E, the extension series (this series is debatable):
Em This masking gene replaces phaeomelanin (tan) with eumelanin (black) over part of the dog
Strength of this masking varies.  At it weakest, it produces black hair fringing the mouth, or a slightly smutty muzzle.
At its strongest most of the head is black, and there is considerable blackening of chest and legs
Ebr Hogu.
This brindling gene causes black, vertical stripes on a sable/fawn background. Coupled with atat, the dog appears black with only brindling on its legs.  This gene might be moved to a different loci. 
E Normal extension of black, allows the A-series alleles to show through with no masking or brindling. 
It is apparently recessive to both Em and Ebr
e Recessive yellow.  Represses the expression of black hairs.  Theorized to cause Baekgu

There are multiple genes that produce the solid black color in dogs.  Without further information, the exact gene in the Jindo cannot be determined.
 
 

last updated 2/14/07