Boss Kennels - French Bulldogs
What health testing do you do?
What health testing do you do?
All our dogs, males and females, are tested for over 200 genetic mutations and diseases
These are the five that are most common in the breed. We also test for DM although it doesn't affect the breed we are still actively trying to get rid of the marker in our line.
• *Cystinuria Type 3
• Hereditary Cataracts
• Multifocal Retinopathy 1
• PRA Cone-Rod Dystrophy 4 crd4/cord1
*Cystinuria Type 3 ( Type 1 and 2 mean nothing to bulldogs so please make sure breeders are testing Type 3 Bulldog type.)
OFA: Hips, elbows, patella, spine, trachea and heart
We will be adding PennHip for hips and will also start using one of our own specialists to evaluate the spines along side OFA
All our boys are also tested for the above, along with semen evaluation tested yearly, if not more, along with Mycoplasma, Leptospira, ureaplasma, Brucella canis, Canine Herpes and Chlamydia!
Not all dogs will come back perfect, but knowing what we have inside and out helps us to make the best possible pairing choices for each breeding.
To find complete test results check out each individual dogs profile for results.
Coat & Color
I am not going to try to break down the coat and color genetics behind each color found in the French Bulldog breed here, however I will add a link to each Series found for those interested in learning more about how these beautiful colors and patterns are created. (Standard colors and Non-standards.)
I will do my best to add a little side note to each color and pattern along with a picture if possible.
To truly understand how these color series all work together you must learn what is recessive and what is dominate over what, and how each of the patterns work with each of the colors and with other patterns. It is not as easy as sticking two dogs of the same color together, what is hiding underneath that visible coat plays a big role in the outcome of their puppies, the possibilities are truly endless!
We absolutely love all the colors and patterns the French Bulldog comes in. Standard or not!
That said, our main focus and goal with each breeding is to create puppies that are better than their parents in health, structure and temperament first. Color is just the icing on the cake!
Patterns – Brindle, Tan point and Merle
Standard colors – Fawn, Pied and Cream
Non-Standard colors – Blue, Chocolate ( testable or non-testable) & Lilac
Brindle – Kbr
Brindle is a coat pattern that is predominantly a dark color with lighter colored hairs mixed in, sometimes in a uniform manner and sometimes quite random. Brindling, the lighter hairs, may be almost non-existent sometimes called Seal Brindle, to very heavy, also known as Tiger Brindle or even reverse brindle if there are more light-colored hairs than dark ones.
The brindle gene is found on the K-locus (and is represented by Kbr) is dominant over the fawn gene (Ay) Therefor any puppy with one copy of the brindle gene from either the father or mother will be a brindle (if they do not carry the dominant black gene, KB).
For more information on the brindle gene,
Doc is a beautiful example of a Brindle French Bulldog - EmEm Kbrky AyAy BB Dd Ssp
Tan Point – atat or ata
The tan point patter is found on the A allele (at) It causes phaeomelanin to be restricted to the legs, under the tail, front of the chest, muzzle and above the eyes. It is more recessive than sable or agouti, so most tan-pointed dogs are atat, but can also be ata. The tan point pattern is sometimes modified to "saddle" or "creeping" tan.
For More information on the Tan point gene
Rey is a beautiful Blue Tan Point. She is ata on the A gene.
Jughead is a Cocoa tan point at/at on the a locus
Merle - Mm
“Merle is inherited in a dominant fashion, meaning that only one copy of an M allele is necessary for a dog to display some variation of the merle coat color/pattern, which is marked by random dilution of eumelanin (black pigment) leaving patches of normal coat color within areas of diluted pigmentation.”
There is so much to know about the merle gene, so do your research if this pattern is of interest. It can be an absolutely beautiful pattern, but deadly at the same time if not bred correctly.
This is a great place to start for more information, but I highly suggest digging deeper if you are interested in adding Merle into your breeding program.
Odin is known as a Maskless Urajiro, reverse brindle, blue fawn merle. He is quite unique!
Ee Kbrky Ayat Bb dd SS Mm
Fawn/ Sable – Ay
Fawn French Bulldogs can range from a very light tan to a dark reddish tan and everything in between. The term Sable is used for those dogs who are Ay but have heavier shading throughout the coat.
For more information on the A gene
Teyla - Red Fawn EmEm kyky Ayat Bb Dd SS & Jiro - Masked Sable - EmEm kyky Ayat BB Dd SS
Pied – spsp
Random spots of color on a white background. Can be only a few spots or larger patches of random markings.
There are also extreme pied, these are spsp pied with no or almost no color found on the body. Generally, less then 10% of the dog has any color at all. (Make sure these puppies/dogs hearing is tested.)
There is also
Irish pied or Blanket pied – A term used when a pied pup/dog has what looks to be a blanket of color draped over their white backdrop. Leaving the legs and underbelly white or with ticking.
For more information
FeeNix is a beautiful pied (spsp) and Luca is also a pied, (spsp)
Luca is also referred to as a Blanket or Irish pied.
Cream – ee
Cream is created by a double copy of the recessive gene on the E-locus (e/e), which is the first locus in the color priority for the French Bulldog.
Any puppy which is e/e, regardless of what other color determinant genes it carries, will be a cream, as ee is dominate over all other colors and patterns unless pied (spsp) cream (ee).
Cream French Bulldogs have a uniform eggshell coloration, unless they are pied, in which case the color patches on their eggshell bodies can have shade of fawn.
More information on cream
Blue – dd
Also known as mouse, is a dilute gene, that dilutes the base color of the dog, be it black, making it blue or chocolate, making it lilac.
In our program, a true blue will have the DNA kyky aa B dd Making it a solid blue with no patterns or fawn coloring.
For more information on the dilute gene and how it effects the different colors
Rose is a blue Fawn (Ayat dd) and Rey is a Blue tan point (ata dd)
Chocolate – bb
Chocolate French Bulldogs come in a variety of shades, from very dark rich tones, to a lighter milk chocolate.
Their noses are a chocolate colored as well and their eyes can range from a beautiful blue to a yellow or amber color.
For more information
Nickel & daughter Willow both beautiful chocolates.
Isabella - d/d b/b
Isabella possess a double copy of the dilute blue gene, and a double copy of the chocolate gene, creating a beautiful Isabella coloring to the coat. Like Chocolates, Lilacs and cocoa's Isabella's will have those brilliant and beautiful eye colors as well.
Cocoa - co/co - The genetic cause of "cocoa" in Frenchies, formerly known as "untestable chocolate" has now been published. Read here for more! It is quite interesting, and may shock some.
Wall Street is a Cocoa Trindle - Eme Kbrky ata bb DD SS
And Jughead a Cocoa Tan point Eme kyky atat BB coco Dd SS
Lilac – coco dd
Lilacs possess a double copy of the dilute blue gene, and a double copy of the cocoa gene, creating a beautiful Lilac coloring to the coat. Like Chocolates, Lilacs will have those brilliant eye colors as well.
For more information
The Captain and Betty are Lilac Fawn/Sable - EmE kyky Ayat bb dd SS -/dup
Will add adult picture once grown for comparison and changes.
Solids – aa on the A locus
a, is also known as recessive black and is the only allele more recessive than at, therefore you must have two copies of a (a/a) to create a truly solid colored dog.
In our program we will use the term, true solid, only if the dog is a/a and does not carry brindle.
For more information
and for even more understanding,
Other terms you may hear being used
Masked vs Maskless: http://www.doggenetics.co.uk/masks.html#masks
When a dog has a mask, (EmEm) it will have black on the muzzle that can spread to any degree. Some have minimal masking where some are very heavily masked.
A maskless dog (EE) will have no black mask on the muzzle and the base coat color/pattern will be able to express.
This is evidence of a pigment-restricting phaeomelanin dilution gene.
Urajiro affects all phaeomelanin pigment, so brindle dogs can be Urajiro too.
Trindle – A trindle is a dog that is both brindle and tan point. However, because brindle is dominate over tan point the dog’s markings will appear muddy or marked if seen at all. The base of a tan point is black, so the brindle will not show through the base coat color but will express on the tan points.
*Irish pied or Blanket pied – A term used when a pied pup/dog has what looks to be a blanket of color draped over their white backdrop. Leaving the legs and underbelly white or with ticking. *A true Irish pied actually only carries one copy of pied!
Fully Suited - This means no white on the dog at all.
Isabella: Is a testable lilac. Lilac is used for the non-testable chocolate and blue, the original chocolate first found in French Bulldogs. (Labs are working hard to find out where the color is coming from and how it can be tested.) Testable chocolate is relatively new but absolutely stunning!
Quad and Triple carriers. This is only important to breeders as it refers to how many colors, the pup/stud may be carrying.
More to come!!!