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Black Russian Terrier — BetterBred Breed Page – BetterBred.com
BetterBred Breed Profile

Black Russian Terrier

Temperament: Smart, confident, courageous, sometimes stubborn; protective of loved ones, aloof with strangers. Somewhat active and very playful, but calm in the house. A double coated dog, the BRT requires weekly grooming.
Height: 27-30 inches (male), 26-29 inches (female)
Weight: 80-130 pounds
Life Span: 10-12 years
Outlier Index ?
0.33
Born before 2016: 0.32 Born after 2024: 0.42
Avg Genetic Rel. ?
0.02
Born before 2016: 0.01 Born after 2024: 0.05
Internal Relatedness ?
0.02
Born before 2016: 0.03 Born after 2024: 0.02
Black Russian Terrier
#NameGender OIAGRIR
1 MidnightSolo Pride N Joy F 0.30 -0.03 0.03
2 MidnightSolo Read Between the Lines F 0.31 0.02 0.16
3 Black Beard's Go Where You Wanna Go M 0.22 0.05 0.30
4 Midnightsolo Infinite Harmony M 0.32 0.00 0.10
5 Especially Brave MB of Cameron M 0.38 0.03 -0.06
6 Naissur Black Velvet If You Please At Black Beard F 0.28 0.02 0.10
7 Black Beard's Live Like It's Your Last Day M 0.26 0.06 0.05
8 Black Beard's Meatloaf M 0.48 0.03 0.01
9 Black Beard's Supertramp M 0.36 0.06 0.04
10 Black Beard's Ratibor M 0.39 0.08 -0.03
The Black Russian Terrier was created in the USSR as a military/working dog by the Red Star (Krasnaya Zvezda) Kennel in the 40-50s; several breeds were believe to be involved in their creation including Airedale, Giant Schnauzer, Rottweiler, Newfoundland, Caucasion Shepherd Dog and other breeds. They were sold to civilian breeders from the Red Star Kennel in 1957 and subsequently took on more specific appearance and type. The first breed standard was written in 1958. From there they spread worldwide. It is a recognized breed in many kennel clubs including FCI, AKC and CKC. The Black Russian Terrier is a working dog, guarding dog, sporting and companion dog.
The average number of alleles (Aa) per each of the 33 genome-wide STR markers is 6.27, of which 3.48 are effective alleles. This indicates a fair amount of breedwide diversity, but a need to redistribute the alleles to increase the number of effective alleles. There is the presence of a genetic cluster within the breed, however there is presence of outliers. Most BRT are related to the same level as offspring of village dogs that were full siblings, and assuming that the full-sibling pair were offspring of relatively unrelated dogs.

Average metrics by birth year for dogs with recorded birthdates in the BetterBred database.

A 3D genetic map of enrolled Black Russian Terrier dogs in the BetterBred database, based on allele-sharing distance across 33 STR loci. This is not a complete picture of the breed — it reflects only dogs whose owners have enrolled them. Drag to rotate · scroll to zoom · hover for dog names (public profiles only).

Historical founders — oldest 25% of enrolled dogs     Current gene pool — most recent 50% of enrolled dogs
Building plot… this may take a minute for larger breeds.

The Dog Leukocyte Antigen (DLA) region controls immune function and is the most polymorphic portion of the canine genome. Every dog carries two sets of DLA haplotypes — one from each parent — which almost never recombine across generations. Frequency percentages reflect how often each haplotype appears across all allele copies in the breed, not the percentage of dogs carrying it.

Class I Haplotypes

HaplotypeFrequency
1091
51.2%
1092
22.6%
1006
13.1%
1093
6.0%
1095
2.4%
1160
2.4%
1014
1.2%
1094
1.2%

Class II Haplotypes

HaplotypeFrequency
2033
51.2%
2037
23.8%
2007
13.1%
2032
6.0%
2031
2.4%
2060
2.4%
2005
1.2%

Class I & II Combinations

Class IClass IIFrequency
1091 2033
51.2%
1092 2037
22.6%
1006 2007
13.1%
1093 2032
6.0%
1095 2031
2.4%
1160 2060
2.4%
1014 2037
1.2%
1094 2005
1.2%

The Canine Diversity Test from UC Davis Veterinary Genetics Laboratory is the foundation of BetterBred’s breed management tools. Testing your dog adds to the breed database and gives you access to the full suite of breeding analysis tools.

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OI
Outlier Index

The Outlier Index (OI) measures how unusual a dog’s allele combination is relative to the tested population of its breed. A higher OI means the dog carries alleles at lower frequencies across the breed — genetic variants that are underrepresented in the population as a whole.

Dogs with high OI are genetically valuable because they carry diversity that most other tested dogs don’t share. Breeding them thoughtfully into the broader population helps redistribute lower-frequency alleles rather than allowing them to become even rarer over generations.

The breed average shown here reflects all dogs tested in the BetterBred database. The senior and youngster comparisons show whether diversity is trending up or down in recent generations.
AGR
Average Genetic Relatedness

Average Genetic Relatedness (AGR) measures how similar a dog’s DNA is, on average, to every other tested dog in the breed. It reflects the dog’s mean kinship — how closely related it is to the population as a whole.

A lower AGR means the dog is more genetically distinct from the majority of the breed. Dogs with low AGR carry alleles at lower frequencies across the tested population, making them higher-priority candidates for inclusion in a well-managed breeding program.

AGR is conceptually related to mean kinship used in conservation genetics for managed species populations. A declining AGR average in younger dogs suggests the breed is successfully redistributing genetic diversity across generations.
IR
Internal Relatedness

Internal Relatedness (IR) measures how much identical genetic material an individual dog inherited from both parents. IR is a useful indicator of inbreeding: lower IR generally reflects lower inbreeding, and it is widely used and reported in the scientific literature.

A high IR is not the cause for alarm it might appear. Elevated IR can often be resolved in a single generation by pairing with a dog whose ancestry is less represented in the breed. It is a signpost, not a sentence.

BetterBred reports IR for reference, but it is not our primary breeding guidance tool. OI and AGR together give a more complete and actionable picture of a dog’s genetic value to the population.

AGR tells you which dogs are genetically unusual relative to the population. OI tells you which dogs are most valuable to preserve. OI specifically weights mid-frequency alleles, identifying dogs whose ancestry is underrepresented in a way most likely to benefit the breed.