Blue black hair color chart


  Official Rare Color Chart Author: Alesia Dixon
of Rare Bulldogs
Credits: AKC, HealthGene,
VetGen Laboratories,
UC Davis Veterinary Medicine
First edition published in 2008 THIS IS THE ORIGINAL, OFFICIAL COLOR CHART FOR
RARE COLOR ENGLISH BULLDOGS.

43 years of education, knowledge, and hard work is behind this chart.
We hope you appreciate our contribution. © Rare Bulldogs
No express use except as allowed under the blue copyright license below.
Please click the link below if you want to use this chart, in whole or in part, on your site or elsewhere. Creative Commons License
Official Rare Color Chart for AKC English Bulldogs by Alesia Dixon is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
This chart covers the 4 Rare Colors & several Patterns, being produced in Purebred AKC Bulldogs aka "English Bulldogs", which are LILAC, BLUE, CHOCOLATE, both kinds of BLACK, plus the MERLE Pattern.
It is important to realize that the genetics of coat color is very complex and confusing. Research is ongoing, so what we know today can very well be proved untrue, may change, or be added to in the future. That being said, this Chart, like the Genetic Lab sites, will need to change/update information as it comes to light.  
IMPORTANT Breeders, please put your dogs color somewhere in the AKC Registered name so as to preserve Rare Color Pedigrees. For example, we have been using our catch phrases now for years: "Blu Dreams", "Chocolate Sensations", "Lilac Passions", "Black Beauty", "Platinum Perfection", "Mini Mites", "Seal Exclusives", & "Marvelous Merles". You could also just put the color in parenthesis at the end of the name like this: (Lilac).  
RARE COLOR SECTION 1: LILAC ENGLISH BULLDOGS Genotype for Lilac Gene: [bb dd]
(this is a combo gene, full blue and full chocolate combined)   Overview: Lilac Bulldogs start out black, then diluted not once, but twice, by the Chocolate Gene, then the blue gene. The [bb] dilutes black to brown, and the [dd] dilutes the black to blue. Try mixing blue & brown paint, you will get some shade of purple or lilac. The lilac coat should be shiny and looks very close to Weimerainer Grey, with many lighter & darker shades possible. Some lilac coats will have an under color shine through that can be green or pink or somewhere in between according to the light the dog is in. The nose, eyeliner, and footpads are also always some shade of purple/lilac.   Lilac and Tan Lilac Tri/Trindle Lilac Seal Lilac and Tan or Lilac Trindle
Lilac and Tan or Trindle with no or minimal white, but only on the chest. Body is solid lilac. Tan points can be clear or brindled. Lilac Tri or Lilac Trindle
Lilac and white in any design with Tri or Trindle Points.
Rare Bulldogs produced the First Purebred Verified Purple Lilac Bulldog pictured here...meet Z Lilac Seal
Lilac & White in any design. Lilac and Tan English Bulldog Lilac Englis Bulldog Extreme Z Lilac Seal English Bulldog       Lilac Merle Tri/Trindle Lilac Platinum Lilac Brindle Lilac Merle Tri or Trindle
Lilac Merle in any design. Patches, nose, footpads, and eyeliner is purple/lilac. Lilac Platinum
Lilac Platinum Fawn/Sable
All White with none, or minimal body color (less than 10%), usually in spots on the face and tail. Lilac Brindle
Lilac and Fawn Stripes with white markings in any design. Brindle dogs carry at least one Kbr gene and are always either ayay, or ayat at agouti. Brindled bodied dogs cannot have a Kb gene nor be atat. Lilac Tri Merle English Bulldog  Lilac Platinum English BulldogLilac Brindle English Bulldog         Lilac fawn/Sable     Lilac Fawn/Sable
Lilac Fawn/Sable and White
Solid Fawn/Sable or Fawn/Sable and white in any design. Although hair is fawn, the nose, footpads, and eyeliner is purple/lilac.     Lilac Sable English Bulldog     RARE COLOR SECTION 2: BLUE ENFLISH BULLDOGS Genotype for Blue Gene: [dd]   Overview: Blue Bulldogs are diluted black dogs. The blue/grey coat should be shiny & look grey against black objects or in the sun unless it carries the Seal gene, which would show maroon or other color undertones. These dogs may or may not have a fawn undercoat when the hair is rubbed backwards. The nose, footpads, & eyeliner are always blue/grey, which can vary from blue black hair color chart light to dark, not to be mistaken for black.    Blue and Tan  Blue Tri/Trindle  Blue Seal Blue and Tan/Trindle
Blue and Tan/Trindle with minimal white only on the chest. Body is solid blue. Blue Tri/Trindle
Blue and white in any design with Tan/Trindle Points. Blue Seal. Blue & White in any design.
Yhis puppy is also a Full Black and Tan Base, which means she is tan pointed. The points are there, but covered by the Seal [Kb] gene, which is higher on the hierarchy of genes. Blue and Tan English BulldogBlue Seal English Bulldog              Blue Merle Tri/Trindle  Blue Platinum  Blue Brindle Blue Merle Tri/Trindle
Blue Merle in any design. Patches, nose, footpads, and eyeliner is blue. Blue Platinum
Blue Platinum Fawn
All White with none, or minimal body color (less than 10%), usually in spots on the face and tail. Blue and Fawn Stripes with white markings in any design. Brindle dogs carry at least one Kbr gene and are always either ayay, or ayat at agouti. Brindled bodied dogs cannot have a Kb gene nor be atat. Blue Merle English BulldogBlue Brindle English Bulldog               Blue Fawn/Sable     Blue Fawn
Blue Fawn & White
Solid Blue Fawn or Blue Fawn & white in any design. Although hair is fawn, the nose, footpads, and eyeliner is Blue.     Blue Sable English Bulldog    
RARE COLOR SECTION 3: Chocolate English Bulldogs Genotype for Chocolate Gene: [bb]   Overview: Chocolate Bulldogs are diluted black dogs from a different dilution gene than the blue. The chocolate coat should be shiny and look brown against black objects or in the sun, unless the seal gene is involved which can give different undertones to the coat. These dogs may or may not have a fawn undercoat when the hair is rubbed backwards. The nose, footpads, & eyeliner are always chocolate, even in the chocolate fawn.    Chocolate and Tan  Chocolate Tri/Trindle  Chocolate Seal Chocolate and Tan/Trindle
Chocolate and Tan/Trindle with minimal white only on the chest. Body is solid chocolate. Chocolate Tri/Trindle Chocolate and white in any design with Tan/Trindle Points Chocolate Seal
Chocolate and White in any design. Chocolate and Tan English BulldogChocolate Tri English BulldogChocolate Seal English Bulldog Thanks to for allowing us to use this photo.            Chocolate Merle Tri/Trindle  Chocolate Platinum  Chocolate Brindle Chocolate Merle in any design. Patches, nose, footpads, and eyeliner is chocolate. Chocolate Platinum
Chocolate Platinum Fawn
All White with none, or minimal body color (less than 10%), usually in spots on the face and tail. Chocolate abd Fawn Stripes with white markings in any design. Brindle dogs carry at least one Kbr gene and are always either ayay, or ayat at agouti. Brindled bodied dogs cannot have a Kb gene nor be atat. Chocolate Tri Merle English BulldogChocolate Platinum English BulldogChocolate Brindle English Bulldog               Chocolate Fawn/Sable     Chocolate Fawn
Chocolate Fawn and White
Solid chocolate Fawn or chocolate Fawn and white in any design. Although hair is fawn, the nose, footpads, and eyeliner is chocolate.     cHOCOLATE fAWN/sABLE eNGLISH bULLDOGS    
RARE COLOR SECTION 4: Black English Bulldogs Genotype for Black Gene: [Kb] and/or [atat]   Overview: Black Bulldogs are the most common of the 4 Rare Colors in AKC English Bulldogs. The black should be shiny & look black against black objects or in the sun unless the seal gene is involved which can show a different color undertone to the black coat. These dogs may or may not have a fawn undercoat when the hair is rubbed backwards. The nose, footpads, & eyeliner are always a true black.    Black and Tan  Black Tri/Trindle  Black Seal Black and Tan/Trindle
Black and Tan/Trindle with minimal white only on the chest. Body is solid black. Black Tri/Trindle
Black and white in any design with Tan/Trindle Points Black Seal
Black and White in any design Black and Tan English BulldogBlack Tri English Bulldog  Black Seal English Bulldog               Black Merle Tri/Trindle  Black Platinum  Black Brindle Black Merle in any design. Patches, nose, footpads, and eyeliner is black. Black Platinum
All White with none, or minimal body color (less than 10%), usually in spots on the face and tail. Black and Fawn Stripes with white markings in any design. Brindle dogs carry at least one Kbr gene and are always either ayay, or ayat at agouti. Brindled bodied dogs cannot have a Kb gene nor be atat. Black Tri Merle English BulldogBlack Platinum English BulldogBlack Brindle Englsih Bulldog        
How to AKC register your Rare Color Bulldog There are 2 ways to do this.
Please put your dogs color somewhere in the AKC Registered name so as to preserve Rare Color Pedigrees. For example, we have been using our catch phrases now for years: "Blu Dreams", "Chocolate Sensations", "Lilac Passions", "Black Beauty", "Platinum Perfection", "Mini Mites", "Seal Exclusives", & "Marvelous Merles". You could also just put the color in parenthesis at the end of the name like this: (Lilac). Do this especially if you intend to register online and choose a standard color for your dog.   The below instructions are for mailing in. 1. Take 3 photos, 1 of each side, and one from the front, with good lighting so the true colors and markings show up and will print well. Print out the photos in color.
2.Fill out your Registration Form Fully, front and back. HINT: put your e-mail address on the form and you will get a copy of your certificate mailed to you as soon as they process the registration.
3. Write directly on the form where it says color/markings, the descriptive color of your dog. Do not put any color code numbers in on the form. EX for a lilac tri write: gray and white with tan on the face and legs.
4. Include a letter that says: dear AKC, I have included all info per your requirements for alternate colored dogs. Please verify the alternate coloring for this dog/puppy to be registered. Thank You,
5. Make copies of EVERYTHING for your records.
6. Mail all docs to:
American Kennel Club
PO Box 900053
Raleigh, NC 27675-9053  
Information Section After reading about color here, please use our DNA Q and A Forum for all your color questions   There are thirteen + different locations or loci on the chromosomes that have a combined effect to determine the color of a particular dog. At each locus, there can be found many variations or alleles that can be dominant or recessive in nature. Chromosomes come in pairs, so each dog has two different alleles at each locus on the chromosome pairs, and depending on the dominance of the alleles contained at the locus determines the color of the individual dog. The genetic material of the dog is inherited one half from the mother and one half from the father. The final characteristics of the offspring is determined by the new combination that results and the dominance, recessive nature, & hierarchy of the alleles that they inherit.   INFORMATION SECTION 1:   As in all the Tri Colors (3 colors on the dog one of which is always the tan points), the tan points are typically on the eyebrows, cheeks, front shoulders (right above the chest area between the legs), around the tail, and partial on both front and back legs. Tan points will not show up if the dog is white where the points would normally be. Tan points can also be hidden by other genes, such as the SEAL gene, as it is higher on the hierarchy of genes. Tan points can bleed through on some dogs when only one [at] is present. It normally takes a double [atat] dog to show tan points. As of this writing, the geneticists do not know why this happens on some dogs with the same dna & not others.
It is my thinking that Sable EB's that show tan points &/or have dark etching, DO carry one [at] & are ayat in their dna. Most TRUE Fawn (red based dog) will not show sable hairs, tan points, or dark etching & will be ayay in their DNA. To back this up, we conducted a private study to back up our thinking. Click to research our Black Color Study   INFORMATION SECTION 2: PLATINUM   Platinum basically means an ALL WHITE Dog. Platinum is not a color, but is rather a lack of pigment. So you can technically have a genetic true color dog, such as a Dark Chocolate Tri who is ALL white! It has been accepted for years now, that dogs with spots of color that represent 10% or less of the total body color, may be designated Platinum. The preferred True Platinum has an all white coat. Any where the dog is white could have hidden color, remember white takes out the color that would normally be there.   INFORMATION SECTION 3: FAWN & SABLE VS TRUE COLORS   In Red/Yellow (Fawn) dogs, the hair is not affected by the 2 DILUTE genes [bb & dd] nor the Merle Dilute Gene. The nose, footpads, and eyeliner is the only thing affected by these color genes. Therefore, you can have a dog with it's original hair color, but with diluted pigment as noted. These dogs are correctly referred to as Lilac Fawn/Sable, Blue Fawn/Sable, Chocolate Fawn/Sable and Ghost Merle. There is no Black Fawn/sable, this is the same as the standard fawn/sable dog with a black nose.
For any color dog to be TRUE color rather than Fawn/Sable Color, it has to have a FULL Black Base or at least one dominant seal gene base. The 2 black Bases are the SEAL gene [Kb] needing only one since it is a dominant gene, and the Black and Tan gene [atat]. DNA STUDY-ENGLISH BULLDOGS SABLE vs FAWN
Click to see Entire Study with Photos and Participants   INFORMATION SECTION 4: BRINDLE & TRINDLE   The genes that cause dogs to be Brindle are not yet fully understood, even by the scientists themselves. What we do know so far is that one of the markers on the K gene, specifically Kbr, is responsible for the brindle color on the coat, whether it be a partial or full brindleing, such as the Tan Points being brindled, which is what we call Trindle. The agouti gene overrides the brindle gene on the dogs body coat & makes it look solid color, except for any area where the dog is tan pointed or white.
The K gene is confusingly called Dominant Black, because this gene shows as brindle, and black (seal). ALL brindle dogs carry at least one K gene. It takes only one since it is a Dominant gene to show on the dog.   INFORMATION SECTION 6: MERLE   The Merle Gene dilutes random sections of hair to a lighter color which leaves Patches of the original color, sometimes these patches can be very small. If you start with a black dog and add the Merle Gene, you still have a black dog genetically, but with sections of the black diluted. Unlike the piebald pattern, these patches or sections may look jagged on the outer edges. Merle affects only the Eumelanin, and does not affect the Phaeomelanin (red/fawn) which will appear normal. This means you can have a merle dog and not see it visually. Merle affects only black based coat color. Eyes, and noses can also be merled.
Black Merle dogs are often called Blue Merle because the Merle gene dilutes patches of black to a grey color. Blue Merle on genetically Black Merle dogs is a widely used term, but is not correct. They should be called Black Merle, their nose, footpad, and eyeliner pigment is still black. If these dogs did not have the merle gene, they would be solid black. The term Blue merle, when used on black dogs is misleading because blue dogs should have the [dd] gene if they were truly blue. A black merle dog will never have the double [dd] gene, but the True Blue Merle dog would always be [dd]. It is the patches on the dog that will visually define the dogs color and what it should be appropriately called. This can be backed up with DNA testing. Thus in the True Blue Merle dog, the patches that are left would be True Blue and the sections that are diluted would be a much lighter color blue. This is the case in all the Rare Colors. The sections left on the lilac Merle dog are almost white, it is so light. Makes since when you think about it. There are 3 dilution genes at work in a Lilac Merle dog. Some of these colors will blend in with the diluted color so much, that DNA Color Testing may need to be done to be sure of the true color.
The Merle gene when doubled up, can, but not always does, cause health issues, mostly deafness and blindness. For this reason, two merles should not be bred together, as this could result in double Merle puppies with possible problems. These problems are virtually eliminated in single Merle gene dogs and the percentage of incidence is the same as in any breed, color, or pattern. Double Merle can be problematic because it can cause lack of pigment in certain vital areas, such as the eyes and inner ears. Single merle dogs have plenty of pigment because they still have a non-merle allel to make pigment. Double Merles often have large areas of white where there is no pigment produced.
In the hierarchy of genes, the Merle Gene overrides the Dominant Black(SEAL) gene, the Seal gene overrides the black and tan gene, so you can have a Black and Tan, Black Seal, Black Merle dog and would mainly see only the merle, but muted. It is very important to know the TRUE DNA of your dog if you plan to breed.    
Reading DNA results We have used UC Davis for many years and recommend them above all other labs for color testing. The Results Chart below uses UC Davis' letter system. Other labs have different lettering systems, which is very important to differentiate. CREDITS: The reading and results in the chart, are predominantly excerpts from the   AGOUTI Other genes restrict agouti expression such as the dominant black gene. There are 4 known alleles of agouti which are: fawn/ sable (ay), wild sable (aw), black-and-tan (at), recessive black (a). The agouti test is also useful to help determine the color of dogs that have white patterns that may obscure the distribution of the colored pigment. ay ay Full fawn/sable. ay aw Fawn, carries wild sable. ay at Fawn, carries black and tan. ay a Fawn, carries recessive black. aw aw Full wild sable. aw at Wild sable, carries black and tan. aw a Wild sable, carries recessive black. at at Full black and tan. at a Black and tan, carries recessive black. a a Full Recessive Black.     BROWN/CHOCOLATE/LIVER There are two alleles, the dominant full color (B) and the recessive brown (b). Two copies of brown are needed to dilute black pigment to brown. For red or yellow dogs, the brown allele does not dilute the hair color, but will change the color of nose and foot pads from black to brown if two brown alleles are present. B B Full Color, no brown gene present. B b Carrier, 1 copy of brown present. b b Full brown. Black pigment, if present, is diluted to brown, red/yellow dogs will have brown noses and foot pads.     DILUTE/BLUE There are two alleles, the dominant full color (D) and the recessive dilute (d). Two copies of dilute are needed to lighten black pigment to grey, which we call blue, and red pigment to cream. D D

Full color, no dilute gene present.

D d Carrier, 1 copy of dilute present. d d Full Dilute. Black pigment, if present, is diluted to blue, red/yellow dogs will have blue noses and foot pads.     DOMINANT BLACK This gene produces dominant black vs. brindle vs. fawn/sable colors. K K Full Dominant Black. This could present as Brindle or Seal and is confirmed visually. K N Carrier, 1 copy of Dominant Black present. N N Does not carry Dominant Black.     MERLE Merle is governed by a SINE insertion in SILV gene. Merle only dilutes black pigment, so dogs with an MC1R ee genotype have no black pigment and thus do not express merle visibly. However, they can produce merle offspring. The 3 alleles for merle are, merle (M), SINE with longer poly-A tail, cryptic merle (Mc), SINE with shorter poly-A tail,  and non-merle (N). Dogs with Mc typically display little to no merling. Inheritance of merle is genetically unstable for both M and Mc alleles. During DNA replication and cell division, M may occasionally undergo poly-A tail reduction to produce Mc, while Mc may undergo expansion and revert to M.  M M Full Merle. 2 copies of Merle present. M Mc Full Carrier. 1 copy of both Merle genes present. M N Carrier. 1 Copy of Merle present. Mc Mc Full Carrier. 2 copies of Cryptic Merle present. Mc N Carrier. 1 copy of Cryptic Merle present. N N Non-Merle. No copies of Merle or Cryptic Merle.     PIEBALD/PARTI/RANDOM WHITE SPOTTING A DNA variant has been found in the MITF gene that is associated with piebald spotting. A dog with one copy of the MITF variant has some white pattern expression, while a dog with 2 copies of the variant display more extreme white. Additional mutations in MITF or other white spotting genes appear to be present in some breeds that affect the amount of white being expressed. In other breeds, piebald behaves as a recessive trait, that is 2 copies of piebald are needed to produce white spotting. White/Piebald can be either recessive or dominant according to the breed, and in some breeds also behaves as a dosage dependent trait. N N Non Piebald/White. No copies of piebald/white present. N S Carrier. 1 copy of piebald/white present S S Full Piebald/White. 2 copies present.      
Glossary of Terms Please suggest terms that you would like defined in this section, by emailing us @ AGOUTI Recessive black. In bulldogs this would dna as atat, ayat, or ayay ALLELE One of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome. EX: dilute has 2 alleles, D and d. see VARIANT BLACK AND TAN Black and Tan with minimal white only on the chest. Body is solid black with tan markings on the eyebrows, cheeks, front chest, legs, and under the tail. BLACK BASE This would be a dog with full black at agouti, ie atat, and a full or carrier at dominant black, ie KN ro KK  when the dominant black is expressed as Seal. This Black base is needed in order to produce true, vivid colors in lue of these colors in fawn or sable. In  black base dogs, the genes that change color affect the coat and not just the  nose, eyeliner, pad color. Note: Seal base may be muted and not vivid. BLACK BRINDLE Black and Fawn Stripes with or without white markings in any design. Brindle dogs carry at least one Kbr gene and are always either ayay, or ayat at agouti. Brindled bodied dogs cannot have a Kb gene nor be atat. BLACK BRINDLE MERLE Black Merle with or without white in any design with the added K gene being brindle. Diluted hair appears blue. Black Merles are incorrectly called Blue Merles in many instances. Patches, nose, footpads, and eyeliner is black. Note: these dogs can appear only brindle, only merle, or a combo of the two. BLACK MERLE Black Merle with or without white in any design. Diluted hair appears blue. Black Merles are incorrectly called Blue Merles in many instances. Patches, nose, footpads, and eyeliner is black. BLACK MERLE TRI Black, Tan, and white in any pattern with random diluted patches. Body is black merle and white with tan markings on the eyebrows, cheeks, front chest, legs, and under the tail. Patches, nose, footpads, and eyeliner is black. Note: The black merle or tan will not show where the dog is white but will be black merle tri genetically. BLACK PLATINUM A white dog with little(10% or less) or no patches of black on the fur. This dog will DNA atat or K, with K being SEAL (see Dominant Black). White is not a color, but is lack of pigment. see definition of WHITE and PLATINUM. BLACK  SEAL Black or Black and White in any Design. This dog will DNA as K, with the K being SEAL. BLACK TRI Black, Tan, and white in any pattern. Body is black and white with tan markings on the eyebrows, cheeks, front chest, legs, and under the tail. Note: The black or tan will not show where the dog is white but will be black tri genetically. BLACK TRINDLE Black, Trindle, and white in any pattern. The tan portions on the dog will be brindled, thus called Trindle. Body is black and white with tan markings on the eyebrows, cheeks, front chest, legs, and under the tail. Note: The black or tan will not show where the dog is white but will be black trindle genetically. BROWN Brown hair color on a dog called chocolate and sometimes liver. BLUE AND TAN Blue and Tan with minimal white only on the chest. Body is solid blue with tan markings on the eyebrows, cheeks, front chest, legs, and under the tail. BLUE BRINDLE Blue and Fawn Stripes with or without white markings in any design. Brindle dogs carry at least one Kbr gene and are always either ayay, or ayat at agouti. Brindled bodied dogs cannot have a Kb gene nor be atat. BLUE BRINDLE MERLE Blue Merle with or without white in any design with the added K gene being brindle. Diluted hair appears lighter blue. Patches, nose, footpads, and eyeliner is blue. Note: these dogs can appear only brindle, only merle, or a combo of the two. BLUE FAWN Fawn color fur with nose, eyeliner, & foot pads being blue or gray with light to dark tonal value. BLUE GHOST MERLE Fawn/Sable color fur with nose, eyeliner, & foot pads being blue or gray with light to dark tonal value, and visible faint merle patches when young. These merle patches fade into the fawn/sable coat and are not  visible at adulthood in most instances. BLUE MERLE Blue Merle with or without white in any design. Diluted hair appears lighter blue. Patches, nose, footpads, and eyeliner is blue. BLUE MERLE TRI Blue, Tan, and white in any pattern with random diluted patches. Body is blue merle and white with tan markings on the eyebrows, cheeks, front chest, legs, and under the tail. Diluted hair appears lighter blue. Patches, nose, footpads, and eyeliner is blue. Note: The blue merle or tan will not show where the dog is white but will be blue merle tri genetically. BLUE PLATINUM A white dog with little(10% or less) or no patches of blue on the fur. This dog will DNA dd. White is not a color, but is a lack of pigment. see definition of WHITE and PLATINUM. BLUE SABLE A dog with Fawn colored hair, sometimes with blue tips. Blue etching is often seen around the eyes, throughout the coat, on the tail, and feet. The pigment on the nose, pads, and eyeliner will be blue. Some of these dogs will show tan points. It is not known why the tan points bleed through on some Sables and not others. BLUE SEAL Blue or Blue and White in any Design. This dog will DNA as dd K, with the K being SEAL. BLUE TRI Blue, Tan, and white in any pattern. Body is blue and white with tan markings on the eyebrows, cheeks, front chest, legs, and under the tail. Note: The blue or tan will not show where the dog is white but will be blue tri genetically. BLUE TRINDLE Blue, Trindle, and white in any pattern. The tan portions on the dog will be brindled, thus called Trindle. Body is blue and white with tan markings on the eyebrows, cheeks, front chest, legs, and under the tail. Note: The blue or tan will not show where the dog is white but will be blue trindle genetically. BULLDOG An AKC registered purebred breed, in most instances referred to as an "English Bulldog". CARRIER Every gene has 2 sides. When one side is positive and one side is negative, then the dog is considered a carrier of that trait, whether it be color, pattern, disease, etc. a carrier dog will pass on the carrier gene at a rate of 50% on each individual puppy born. CHOCOLATE AND TAN Chocolate and Tan with minimal white only on the chest. Body is solid chocolate with tan markings on the eyebrows, cheeks, front chest, legs, and under the tail. CHOCOLATE BRINDLE Chocolate and Fawn Stripes with or without white markings in any design. Brindle dogs carry at least one Kbr gene and are always either ayay, or ayat at agouti. Brindled bodied dogs cannot have a Kb gene nor be atat. CHOCOLATE BRINDLE MERLE Chocolate Merle with or without white in any design with the added K gene being brindle. Diluted hair appears lighter chocolate. Patches, nose, footpads, and eyeliner is xhoxolatek. Note: these dogs can appear only brindle, only merle, or a combo of the two. CHOCOLATE FAWN Fawn color fur with nose, eyeliner, & foot pads being chocolate with light to dark tonal value. CHOCOLATE GHOST MERLE Fawn/Sable color fur with nose, eyeliner, & foot pads being chocolate with light to dark tonal value, and visible faint merle patches when young. These merle patches fade into the fawn/sable coat and are not  visible at adulthood in most instances. CHOCOLATE MERLE Chocolate Merle with or without white in any design. Diluted hair appears lighter chocolate. Patches, nose, footpads, and eyeliner is chocolate. CHOCOLATE MERLE TRI Chocolate, Tan, and white in any pattern with random diluted patches. Body is chocolate merle and white with tan markings on the eyebrows, cheeks, front chest, legs, and under the tail. Patches, nose, footpads, and eyeliner is chocolate. Note: The chocolate merle or tan will not show where the dog is white but will be chocolate merle tri genetically CHOCOLATE PLATINUM A white dog with little(10% or less) or no patches of chocolate on the fur. This dog will DNA bb. White is not a color, but is a lack of pigment. see definition of WHITE and PLATINUM. CHOCOLATE SABLE A dog with Fawn colored hair, sometimes with chocolate tips. Chocolate etching is often seen around the eyes, throughout the coat, on the tail, and feet. The pigment on the nose, pads, and eyeliner will be chocolate. Some of these dogs will show tan points. It is not known why the tan points bleed through on some Sables and not others. CHOCOLATE SEAL Chocolate or Chocolate and White in any Design. This dog will DNA as bb K, with the K being SEAL. CHOCOLATE TRI Chocolate, Tan, and white in any pattern. Body is chocolate and white with tan markings on the eyebrows, cheeks, front chest, legs, and under the tail. Note: The chocolate or tan will not show where the dog is white but will be chocolate tri genetically. CHOCOLATE TRINDLE Chocolate, Trindle, and white in any pattern. The tan portions on the dog will be brindled, thus called Trindle. Body is chocolate and white with tan markings on the eyebrows, cheeks, front chest, legs, and under the tail. Note: The chocolate or tan will not show where the dog is white but will be chocolate trindle genetically. CLEAR SABLE  A Sable dog with no dark hairs in its coat. Clear sables are almost indistinguishable from recessive reds.
NOTE: Clear sable can hide merle as effectively as recessive red, although this is not the case 100% of the time. CRYPTIC MERLE Cryptic Merle is a scientific term used for the Merle Gene with a shorter poly-a tail. This term is incorrectly used to define a Phantom or Ghost Merle. which usually has the longer poly-a tail, but does not present on the dog for lack of black base. Cryptic Merle should only be used when the Merle dog has been DNA'd with a positive Mc gene. DILUTE A gene that dilutes black coat color in dogs to gray or blue. Dilute dogs will DNA as dd. DOMINANT BLACK A gene that can produce black seal or brindle. The Seal or Brindle has to be determined visually.  DOUBLE MERLE A dog with full Merle (MM). Double merles are predominantly white. The merle patches tend to be on the upper body. They may or may not have the spotting gene. Sometimes double merles are 100% white. ENGLISH BULLDOG An AKC registered purebred Bulldog. Correctly stated as simply, Bulldog. Most people know the AKC Bulldog as an English or British Bulldog, therefore most breeders use the term English Bulldog. FAWN A dog with fawn colored hair that can vary from almost white to darker shades of fawn, red, orange, etc. FULL Every gene has 2 sides. When both sides are positive,  the dog is considered a Full or Double for that trait, whether it be color, pattern, disease, etc. A Full Trait dog will pass on one copy of that trait to every puppy born. FULL BODY SUIT Any Color and Tan with minimal white ONLY on the head and chest. FULL SUIT Any Color and Tan with no white or minimal white ONLY on the chest. GENOTYPE A dogs genotype is its complete heritable genetic identity However, the word genotype can also refer just to a particular gene or set of genes carried by an individual dog. GHOST MERLE Synonymous with the term Phantom Merle. A Merle dog without a black base, that is not visibly merle. The Merle gene only visibly affects a black based dog, thus the term Ghost Merle.
This is not to be confused with Cryptic Merle, which is a scientific term used for the Merle Gene with a shorter poly-a tail. LETHAL WHITE Double merles are often referred to as "lethal whites". This is totally incorrect term as Lethal white is a completely separate gene that does not occur in dogs, but in horses. The merle gene is not lethal, however it can be problematic if doubled in some breeds. LILAC AND TAN Lilac and Tan with minimal white only on the chest. Body is solid lilac with tan markings on the eyebrows, cheeks, front chest, legs, and under the tail. LILAC BRINDLE Lilac and Fawn Stripes with or without white markings in any design. Brindle dogs carry at least one Kbr gene and are always either ayay, or ayat at agouti. Brindled bodied dogs cannot have a Kb gene nor be atat. LILAC BRINDLE MERLE Lilac Merle with or without white in any design with the added K gene being brindle. Diluted hair appears Lilac or almost white. Patches, nose, footpads, and eyeliner is lilac. Note: these dogs can appear only brindle, only merle, or a combo of the two. LILAC FAWN Fawn color fur with nose, eyeliner, & foot pads being lilac or gray with light to dark tonal value. LILAC GHOST MERLE Fawn/Sable color fur with nose, eyeliner, & foot pads being lilac or gray with light to dark tonal value, and visible faint merle patches when young. These merle patches fade into the fawn/sable coat and are not  visible at adulthood in most instances. LILAC MERLE Lilac Merle with or without white in any design. Diluted hair appears lighter Lilac. Patches, nose, footpads, and eyeliner is lilac. LILAC MERLE TRI Lilac, Tan, and white in any pattern with random diluted patches. Body is lilac merle and white with tan markings on the eyebrows, cheeks, front chest, legs, and under the tail. Patches, nose, footpads, and eyeliner is lilac. Note: The lilac merle or tan will not show where the dog is white but will be lilac merle tri genetically LILAC PLATINUM A white dog with little(10% or less) or no patches of lilac on the fur. This dog will DNA bb dd. White is not a color, but is a lack of pigment. see definition of WHITE and PLATINUM. LILAC SABLE A dog with Fawn colored hair, sometimes with lilac tips. Lilac etching is often seen around the eyes, throughout the coat, on the tail, and feet. The pigment on the nose, pads, and eyeliner will be lilac. Some of these dogs will show tan points. It is not known why the tan points bleed through on some Sables and not others. LILAC SEAL Lilac or Lilac and White in any Design. This dog will DNA as bb dd K, with the K being SEAL. LILAC TRI Lilac, Tan, and white in any pattern. Body is lilac and white with tan markings on the eyebrows, cheeks, front chest, legs, and under the tail. Note: The lilac or tan will not show where the dog is white but will be lilac tri genetically. LILAC TRINDLE Lilac, Trindle, and white in any pattern. The tan portions on the dog will be brindled, thus called Trindle. Body is lilac and white with tan markings on the eyebrows, cheeks, front chest, legs, and under the tail. Note: The lilac or tan will not show where the dog is white but will be lilac trindle genetically. MERLE This gene produces dogs with irregularly shaped patches of diluted pigment and solid color in the fur. The patches can have jagged edges and can be small dots to very large patches of fur. The diluted parts of the fur are a lighter version of the original fur color. NON-CARRIER Every gene has 2 sides. When both sides are negative,  the dog is considered a non carrier for that trait, whether it be color, pattern, disease, etc. A non-carrier dog will never pass on that trait to any puppy born. PATCHWORK MERLE A Merle dog with different color spots in the coat. The merle gene is unstable and can sometimes partially dilute some of the patches in the coat, which would be somewhere between the base coat color and the patch color. They may sometimes appear brownish. This term is synonymous with the term "Tweed Merle". PHANTOM MERLE Synonymous with the term Ghost Merle. A Merle dog without a black base, that is not visibly merle. The Merle gene only visibly affects a black based dog, thus the term Phantom Merle.
This is not to be confused with Cryptic Merle, which is a scientific term used for the Merle Gene with a shorter poly-a tail. PIEBALD A white spotting pattern that does not have a uniform genetic basis. Some white patterns are symmetrical, some are not, and some dogs are all white. see WHITE PLATINUM A white dog with little(10% or less) or no patches of color on the fur. White is not a color, but is lack of pigment. see definition of WHITE. QUAD or QUAD Producer This term denotes colors the dog is capable of producing. There are 4 Rare Colors in English Bulldogs, which are Lilac, Blue, Chocolate, and Black. QUAD means 4.  A QUAD dog can produce all 4 of the Rare Colors. QUAD does not represent the the DNA of a dog, but rather its producing capability.
NOTE: a QUAD dog can be any color. SABLE A dog with Fawn colored hair, sometime with black tips. Black etching is often seen around the eyes, throughout the coat, on the tail, and feet. Some of these dogs will show tan points. It is not known why the tan points bleed through on some Sables and not others. TAN POINT Doberman/Rottweiler type tan markings that appear on the eyebrows, sides of cheeks, lower legs, front chest, and under the tail. If the dog is white in these areas, or is a SEAL, the tan points will not show, but will be hidden. The terms Tan Point and Tri are interchangeable. TRI Indicating the Tan Points on an EB. The dog must carry 2 copies of [atat] to be a Tri.
Depicts that a dog has tan points/markings. Also indicates the dog would DNA [atat] at agouti, even if the tan points are hidden.
This term was originally meant to indicate 3 colors on a dog, but so many people use the term to indicate the tan markings-Doberman type-on the EB, that to hold down confusion, this is the official way we use it now. TRIPLE CARRIER A person could argue that any dog is a triple carrier since there are upward of 13 color genes and modifiers. For the purpose of this chart for AKC Bulldogs, the term Triple Carrier denotes the dna of the dog, specifically a dog that carries at least one (d), one (b), & one (at), no matter what the color of the dog. TWEED MERLE A Merle dog with different color spots in the coat. The merle gene is unstable and can sometimes partially dilute some of the patches in the coat, which would be somewhere between the base coat color and the patch color. They may sometimes appear brownish. This term is synonymous with the term "Tweed Merle". VARIANTS One of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome. EX: dilute has 2 alleles, D and d. see ALLELE WHITE Not a color, but rather, lack of pigment. White will extract any color or pattern from the dogs fur wherever it appears. This dog will still dna for its appropriate color and/or pattern, whatever that may be, and is capable of producing that color in addition to white. see PIEBALD         Go back to Previous Page Go back to Previous Page CONTACT:  850-688-9925  M-F 9-5    SAT 9-2   CENTRAL STANDARD TIME    Visitors: Rare Bulldogs QUAD Trademark



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