Blue Merle (Dapple) Long-Haired Dachshund: The Real Story
Share
The blue merle long-haired dachshund is one of the most sought-after and controversial varieties in the dachshund world. This spectacular coat with its bluish sheen fascinates as much as it worries. Learn the whole truth about this rare color: genetics, health risks, official recognition and tips for a responsible purchase.
⚠️ Important truth: The term "blue merle dachshund" is technically incorrect. What people call "blue merle" is actually a black and tan dapple (diluted black on a silvery-gray background; "dapple" is the AKC term for merle). A true "blue" refers to a controversial genetic dilution (dd gene) that can cause color dilution alopecia (progressive hair loss). Dapple (merle) dachshunds are recognized by breed standards, but they require responsible breeding (never two merle parents together). Price: roughly €2,000-3,500 ($2,200-3,800). Absolute caution when buying.
Blue vs. blue merle: clearing up the terms
The terminology around the "blue merle dachshund" is a major source of confusion. It's crucial to understand the difference between several distinct concepts to make an informed choice.
The 3 types of "blue" in dachshunds
| Term | Genetic reality | Status |
|---|---|---|
| "Blue merle" | Black and tan dapple (merle gene M) - diluted black on a silvery-gray background | ✅ Recognized as dapple; a popular name that is technically incorrect but common |
| Diluted blue | The dd genetic dilution of black (solid charcoal gray with no patches) | ❌ Not recognized in breed standards, alopecia risk, controversial |
| Isabella (lilac) | Double dilution dd + bb (diluted brown = pinkish gray-beige) | ❌ Not recognized in breed standards, high alopecia risk, highly controversial |
What people call "blue merle"
In everyday and commercial language, "blue merle dachshund" almost always means a black and tan dapple dachshund whose black base has been diluted by the merle gene, creating spectacular silvery-gray/bluish highlights.
"Blue merle" dachshund (black and tan dapple)
Correct name: Gray-dominant black and tan dapple dachshund
Look: a silvery/bluish-gray background with black or dark gray patches, tan (orange-brown) markings on the muzzle, legs, chest and under the tail
Genetics: Mm (one merle gene) + a black and tan base
Eyes: often blue or odd-eyed (one blue, one brown)
Recognition: officially recognized as "dapple," healthy when bred responsibly
The true "diluted blue": avoid it
The true blue dachshund (without merle) results from the dd dilution gene applied to black, creating a uniform charcoal-gray color. This color is associated with serious health problems.
Look: a uniform charcoal/steel-gray coat with no patches, a "metallic" appearance
Major problem: Color dilution alopecia (CDA)
Symptoms:
- Progressive hair loss starting around 6 months to 3 years
- Bare patches mainly on the back and sides
- Dry, scaly skin with chronic infections
- Constant itching, permanent discomfort
- No cure, only lifelong palliative care
- High veterinary costs and reduced quality of life
Status: NOT recognized by the breed standard, considered a "fashion color" that responsible breed clubs say to avoid at all costs.
Merle and dilution genetics
Understanding the genetics behind these complex coats is essential to assess risks and make a responsible choice.
The merle gene (M): the recognized dapple
The merle gene is a dominant gene that randomly and partially dilutes the pigmentation of the coat, creating the dapple (mottled) pattern.
- M (Merle) gene: randomly dilutes areas of the coat
- Heterozygous Mm: a single merle gene = a healthy and beautiful dapple
- Homozygous MM: two merle genes = double merle = serious dangers (deafness, blindness)
- Effect on black and tan: dilutes the black to silvery gray (the "blue" effect), keeps the tan markings
- Inheritance: 50% dapple puppies if one parent is dapple + one parent is solid
- Safety: perfectly healthy if only one parent is dapple (Mm)
The dilution gene (d): the problematic one
The dilution gene d is recessive and dilutes the whole coat uniformly. Unlike merle, which is selective and random, the d dilution affects all hairs evenly.
Dilution gene (d)
DD (normal): no dilution, intense colors (black, brown, red)
Dd (carrier): normal appearance but carries the gene and can pass it on
dd (diluted): full dilution = black becomes blue (gray), brown becomes isabella (lilac)
CDA risk: 80-90% of dd dogs develop color dilution alopecia
Combination with merle: possible but complicates the genetics (blue merle = dapple dd, very rare)
Comparative genetics table
| Coat | Genotype | Health risk | Recommendation |
|---|---|---|---|
| Black and tan dapple ("blue merle") | Mm + DD (or Dd) | None if Mm | ✅ OK if bred responsibly |
| Solid diluted blue | mm + dd | High (CDA) | ❌ Avoid |
| Diluted blue merle | Mm + dd | Moderate to high | ⚠️ Extreme caution |
| Isabella (lilac) | bb + dd | Very high (CDA) | ❌ Absolutely avoid |
| Classic black and tan | mm + DD | None | ✅ Standard, risk-free |
Why a single merle gene is safe
A dapple dachshund (single merle) from a dapple parent and a solid parent is perfectly healthy and carries no extra risk compared with other coats. The single merle gene (Mm) does NOT cause alopecia, does NOT weaken health, and is officially accepted under the breed standard. The only dangers appear with double merle (MM), easily avoided by responsible breeding.
Appearance of the long-haired "blue merle" dachshund
The long-haired black and tan dapple dachshund (commonly called "blue merle") is a spectacularly beautiful variety that combines several rare aesthetic traits.
Detailed coat description
Long-haired "blue merle" coat pattern
Base coat: silvery gray, bluish gray or slate gray (the perceived "blue")
Patches: irregular black or charcoal-gray patches randomly distributed
Tan markings: orange-brown above the eyes, on the muzzle, chest, legs and under the tail (not affected by merle)
Coat texture: long, silky, soft, with elegant feathering on the ears, legs, tail and belly
Uniqueness: every dachshund has an absolutely unique patch pattern, like a fingerprint
Development: the contrasts may soften slightly with age but the pattern stays identical
Distinctive physical characteristics
- Eyes: frequently blue (one or both), odd-eyed (heterochromia), or brown with blue sectors
- Nose: may be black, partially depigmented (pink patches) or slate gray
- Ears: long, hanging, covered in cascading silky hair
- Tail: a full feathered plume, often with alternating light and dark areas
- Puppy coat: often more contrasted; colors soften slightly as they grow
Variations in "blue" intensity
The intensity of the "blue" (silvery gray) highlights varies considerably from one individual to another depending on patch distribution and dilution.
Large diluted gray areas, small and spaced black patches, a very light and luminous effect
Large black patches, smaller gray areas, a darker and more intense effect
Harmonious distribution, strong contrasts, often considered the most attractive
Very little visible dilution, a few discreet gray areas, looks almost like a classic black and tan
How it differs from other dapple coats
| Dapple type | Base color | Final look |
|---|---|---|
| "Blue merle" (black and tan dapple) | Black and tan | Silvery/bluish gray with black patches + tan markings |
| Red dapple | Red | Light beige with dark red patches |
| Chocolate dapple | Chocolate and tan | Pinkish beige with brown patches + tan markings |
Health risks and controversies
The question of "blue merle" dachshund health is at the heart of debates among breeders, veterinarians and breed clubs. The reality is nuanced and depends on the exact genetics.
Single dapple dachshund (Mm): healthy
A dapple dachshund from responsible breeding (one dapple parent + one solid parent) has no additional health problems linked to its coat.
- Life expectancy identical to other coats (12-16 years)
- No increased risk of deafness or blindness
- No coat-related alopecia
- Healthy skin and coat
- The same health risks as any dachshund (disc disease, dental problems)
- Blue eyes are functional and sighted (not a fault)
Double merle (MM): serious dangers
A double merle dachshund (from two dapple parents) faces catastrophic risks. No responsible breeder produces double merles on purpose.
Major risks:
- Deafness: 70-80% are deaf in one or both ears
- Serious eye problems: microphthalmia (tiny eyes), total absence of eyes, early cataracts, partial or total blindness
- Skeletal abnormalities: bone malformations, developmental problems
- Almost-white coat: very little pigmentation, sensitive skin
- Reduced life expectancy: compromised quality of life
- Veterinary costs: constant, expensive care
Prevention: An ethical breeder NEVER breeds two dapples together. Always check the family tree and require that the other parent be a solid color (black and tan, red, etc.).
dd dilution: color dilution alopecia
If the dachshund also carries the dd dilution gene (diluted blue), the alopecia risk is very high, regardless of merle.
Cause: the dd dilution gene (different from merle)
Symptoms: progressive hair loss, dry and infected skin, itching, permanent discomfort
Onset: usually between 6 months and 3 years
Treatment: no cure, only palliative care (medicated shampoos, antibiotics for secondary infections)
Prevention: avoid any uniform "blue" dachshund (charcoal gray), Isabella (lilac), or one combining dilution + merle. Require a genetic test showing DD (normal) or Dd (healthy carrier).
Recommended health tests
- Merle DNA test: confirm Mm (healthy single merle) and never MM (double merle)
- Dilution gene (d) test: confirm DD or Dd (not dd = diluted and at risk)
- Hearing test (BAER): check full hearing in both ears from 8 weeks
- Eye exam: check vision and normal eye structure
- Complete pedigree: confirm only one parent is dapple, the other solid
- Breeder health guarantee: a contract including a take-back clause if a genetic problem appears
Official recognition and breed standard
The official recognition of the dapple dachshund (called "blue merle") varies among kennel organizations and is the subject of debate.
AKC position (United States)
The American Kennel Club long refused the merle coat in the dachshund, but recently relaxed its position.
The AKC calls the merle pattern "dapple" and accepts it in the dachshund, so dapples can be registered, but it remains controversial among some American purists. Dapple dachshunds can now compete in the show ring.
FCI position (Europe)
The Federation Cynologique Internationale, which governs the dachshund standard in Europe, has officially recognized the dapple coat for several decades.
- Official name: "dapple" (the term "merle" is not used in the European standard)
- Recognition: the coat is admitted and described in the FCI dachshund standard
- Shows: dapple dachshunds can take part in dog shows and compete for titles
- Registration: dapples can be entered in the national pedigree registries
- Breeding: breeding is allowed with strict rules (only one dapple parent)
Breed club positions
National breed clubs hold varying positions, from full acceptance to cautious reluctance.
| Organization | Dapple/merle position | Notes |
|---|---|---|
| AKC (USA) | ✅ Accepted | Called "dapple," controversies persist |
| FCI (Europe) | ✅ Officially recognized | Dapple described in the standard, breeding regulated |
| National breed clubs (e.g., Dachshund Club of America) | ⚠️ Positions vary | Responsible breeding expected, awareness of the risks |
| Kennel Club (UK) | ✅ Recognized | Dapple accepted, vigilance over breeding |
| Purist breeders | ⚠️ Reluctant | Prefer traditional coats, fear abuses |
The dilution controversy
While the dapple (single merle) is broadly accepted, the dilutions (blue dd, isabella) are unanimously rejected by responsible organizations.
- Diluted blue (dd): uniform charcoal gray, high CDA risk
- Isabella/Lilac (bb+dd): pinkish gray-beige, very high CDA risk
- Diluted cream: extremely pale red, problematic dilution
- Albino: total absence of pigmentation, multiple health problems
These colors are regarded as "fashion colors" produced without ethics, often sold at higher prices by exploiting buyers' ignorance. They cannot be registered and are banned from the show ring.
Price and finding a responsible breeder
The price of a long-haired "blue merle" dachshund (black and tan dapple) is significantly higher than classic coats because of its rarity and exceptional beauty.
Price range (Europe, approximate)
Standard registered breeder: €2,000-2,500
Specialized registered breeder: €2,500-3,000
Champion lines: €3,000-3,500
Dapple surcharge: +€400 to 1,000 vs. a solid coat
Long-hair surcharge: +€200 to 400 vs. smooth coat
Blue eyes surcharge: +€200 to 500 (highly sought after)
⚠️ Suspicious price: under €1,500 = an unserious breeder, high health risks
Finding an ethical, responsible breeder
Finding a competent breeder is absolutely crucial for a dapple dachshund, because the risks of irresponsible breeding are real.
- ONLY ONE dapple parent: the other parent MUST be solid (black and tan, red...) - ESSENTIAL
- Genetic tests available: can show Mm (single merle) and DD or Dd (not diluted) results
- Registration guaranteed: all puppies are eligible for registration
- Hearing test (BAER): done on puppies before sale
- Eye exam: puppies' eyesight verified
- Kennel visit: accepts visits, shows the parents and living conditions
- Detailed contract: health guarantees, take-back clause, follow-up commitment
- In-depth questions: asks about your lifestyle, experience and plans
- Buyer education: explains the specifics of merle and long-coat care
- Socialization: puppies raised in a family, used to stimulation
- Waiting list: no puppies available immediately; a 6-12 month wait is normal
Major warning signs
- Breeds two dapples together (catastrophic double merle risk)
- Offers "rare" colors: solid blue, isabella, diluted cream (problem colors)
- Can't show the parents' genetic tests (merle, dilution)
- Sells without registration papers "to make it cheaper" (a red flag for any professional breeder)
- Always has puppies available immediately (a puppy mill)
- Refuses visits or offers delivery in a parking lot
- Has an abnormally low price (under €1,500 for a registered dapple)
- Sells puppies under 8 weeks (illegal in many places)
- Offers several breeds and many litters (not specialized)
- Uses sales pitches like "ultra rare," "exclusive," "latest trend"
- Can't explain the genetics of merle and the associated risks
Resources for finding a good breeder
- Dachshund Club of America: a place to find serious, vetted member breeders
- AKC: the official registry for checking a breeder's records
- Dog shows: meet breeders, see their dogs, ask questions
- Recommendations: satisfied owners, verifiable reviews
- Specialized forums: communities of dachshund enthusiasts who share experiences
- Veterinarians: can point you to reputable breeders in their area
FAQ – Blue merle long-haired dachshund
The blue merle long-haired dachshund – more correctly called a long-haired black and tan dapple dachshund – is a spectacular variety that combines exceptional beauty and rarity. If you're drawn to this coat with its silvery-gray and bluish highlights, remember three essential points: 1) Check that it's truly a dapple (mottled, merle gene Mm) and not a diluted blue (uniform, risky dd gene). 2) Insist that only one parent be dapple, the other solid, to avoid the catastrophic double merle. 3) Choose a serious registered breeder who runs all the genetic tests and explains the genetics transparently. With these precautions, you'll welcome a healthy, magnificent and unique companion whose patch pattern will never be found on any other dachshund in the world. The wait and the investment are well worth it.
Information & advice – Teckel Paris