All Breed Statistics

These breed comparisons are based on averages for dogs in our database. Data is dynamic as the database is regularly updated. Breeds with over 100 dog results are highlighted in green because these results can be considered reliable. Results may change but will do so gradually and only if breeders change their breeding practices. Breeds with under 100 but over 50 are marked in yellow because these are conditional results. These may change with the addition of dogs, but current results may provide some important clues. Breeds with under 50 dog results are not yet reliable.

We actively seek more results! Contribute to your breed effort! Please submit your dogs' results today.

INBREEDING COMPARISON

There are various methods of assessing homozygosity or inbreeding. We show Internal Relatedness (IR) and Homozygosity by Locus (HL) because they are weighted by allele frequency and widely used in many modern population genetics studies. Mouse over categories for more explanations.

BreedNumber in Database
Average Alleles per Locus Average number of versions of genes found
Effective Alleles per Locus Number of alleles with impact on diversity
Average Internal Relatedness A measure of how similar genes inherited from each parent are
Average Homozygosity by Locus A measure of inbreeding weighted by how common alleles are
Average Percent Homozygous Percent of all loci that are a matched pair
Akita - American356.613.050.030.3639.2%
Akita - Blend207.062.800.060.3839.4%
Akita - Japanese936.242.430.010.4145.3%
Alaskan Klee Kai2374.972.640.010.3943.6%
Biewer406.523.350.010.3132.9%
Doberman Pinscher2757.032.320.090.4754.5%
English Bulldog1396.702.800.010.3742.8%
Flat-Coated Retriever2175.552.610.030.4045.5%
Golden Retriever568.303.410.010.3131.4%
Havanese1568.944.520.030.2627.4%
Italian Greyhound1707.033.370.030.3437.2%
Miniature Poodle1748.364.120.040.2930.4%
Standard Poodle15059.733.640.030.3132.2%
Shiloh Shepherd934.482.63-0.050.3642.1%

GENETIC RELATEDNESS COMPARISON

We can now use complex mathematical formulas to determine genetic relatedness, using just the identifying alleles in the UC Davis Genetic Diversity Test. Genetic relatedness is determined by the probabilities of animals inheriting the exact same alleles at the exact same loci. Those with more alleles that are the same - even infrequent ones - can be said to be genetically related. They could be related directly or indirectly, but they are genetically similar.

Likewise we can now identify dogs that are unrelated to others. Breeds should have many dogs that are unrelated to others so that if there is a problem, dogs can be selectively breed to lower risks for that problem. Some breeds have maybe unrelated dogs, and others have very few and are therefore at risk.

BreedNumber in Database
Average Genetic Relatedness How closely related same breed dogs are on average
Percent of Breed Unrelated Average percentage of the breed unrelated to each dog
Akita - American35-0.0257.1%
Akita - Blend20-0.5377.9%
Akita - Japanese93-0.0350.7%
Alaskan Klee Kai237-0.0051.7%
Biewer40-0.0461.0%
Doberman Pinscher275-0.0558.6%
English Bulldog139-0.0252.6%
Flat-Coated Retriever217-0.0153.1%
Golden Retriever56-0.0153.4%
Havanese156-0.0154.7%
Italian Greyhound170-0.0257.5%
Miniature Poodle174-0.0258.8%
Standard Poodle1505-0.0255.2%
Shiloh Shepherd930.0246.5%

ALLELE COMPARISON

Alleles are versions of genes, and the alleles tracked by the UC Davis Genetic Diversity Test are identifiers. Alleles are either infrequent in a breed, neutral (at a level that is neither too infrequent or highly frequent) or highly frequent in that breed. All breeds have a certain number that are highly frequent because that's part of what makes them a breed. However, when too many become highly frequent, the breed is at risk for loss of genetic health.

Dogs with more infrequent alleles tend to be less related to any possible bottlenecks or founder effects - situations where only a few dogs become unnaturally influential in a breed. Some breeds have known bottlenecks, and one way to correct these is to look for and breed for a higher Outlier Index in the breed. The lower the average OI in a breed, the more it is influenced by a small set of founders or a genetic bottleneck.


BreedNumber in Database
Avg. Infrequent Alleles per Dog Alleles at risk of being bred out of the population
Avg. Neutral Alleles per Dog Alleles at balanced frequency
Avg. Highly Frequent Alleles Alleles at risk of becoming too common
Avg. Outlier Index A measure of influence from a genetic bottleneck
Akita - American359.96.749.30.31
Akita - Blend209.07.336.50.32
Akita - Japanese937.87.350.90.27
Alaskan Klee Kai2377.112.047.10.34
Biewer4010.78.846.50.38
Doberman Pinscher2755.25.355.40.18
English Bulldog1398.17.750.20.28
Flat-Coated Retriever2176.48.750.90.26
Golden Retriever567.07.351.70.25
Havanese1568.012.046.00.36
Italian Greyhound1707.89.449.50.31
Miniature Poodle1749.68.548.60.33
Standard Poodle15058.15.352.70.24
Shiloh Shepherd939.412.843.80.43

ANCESTRY COMPARISON

Another way to compare breeds is to look at ancestry averages. Dogs from unusual lines tend to have more unusual ancestry, calculated not allele by allele but locus by locus. When dogs have two parents that are unusual, they have more pairs of alleles with low frequency. When an unusual dog is bred to a highly typical dog, they have more pairs of alleles where one allele is highly frequent and the other is unusual. When breeds are well managed, and breeders select strongly for health while also breeding less related dogs, the breeds tend to have higher numbers of neutral alleles. Where there have been recent or sustain outliers being bred to more typical dogs, there will be a higher 'admixed' percentage.


BreedNumber in Database
Unusual Ancestry Average percent of unusual genetics inherited from both parents
Neutral Ancestry Average percent of well balanced genetics inherited from both parents
Typical Ancestry Average percent of highly typical genetics inherited from both parents
Admixed Ancestry Average percent of both highly common and unusual genetics inherited from both parents.
Akita - American355.9%2.3%70.6%21.1%
Akita - Blend207.6%3.2%53.8%15.5%
Akita -Japanese934.3%3.4%75.1%17.1%
Alaskan Klee Kai2375.8%5.7%75.1%13.8%
Biewer408.2%2.6%68.6%20.5%
Doberman Pinscher2752.3%1.9%83.4%12.3%
English Bulldog1394.3%2.3%75.5%17.9%
Flat-Coated Retriever2173.4%4.3%77.9%14.3%
Golden Retriever563.3%2.7%77.9%16.1%
Havanese1566.0%6.2%72.2%15.6%
Italian Greyhound1705.2%3.3%76.7%15.9%
Miniature Poodle1745.9%3.4%71.5%20.4%
Standard Poodle15054.3%1.5%76.2%18.0%
Shiloh Shepherd935.5%10.3%63.9%20.3%

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