DNA profiling for dogs isn’t just about curiosity – owners and breeders use it for very different reasons.
A pet owner might test the dog to uncover breed mix-ups or potential health risks. For a dog breeder, it’s a tool to verify bloodlines and protect the integrity of the breed.
I’ve gone through studies, talked to breeders, and looked at real-world cases to break down how DNA testing applies to each group.
At the end, I’ll share the official stance of our Sarplaninac Kennel FCI 4302 on this topic.
Note: we provide this information for educational purposes. Please remember that we are not veterinarians, and you should always consult a professional. You can find our full medical disclaimer in the footer below.
What Exactly Is a Dog DNA Test?
A dog DNA test is a scientific analysis of your dog’s unique genetic code, extracted from cells in its saliva.
You collect a simple cheek swab at home, mail it to a specialized lab, and scientists examine hundreds of thousands of genetic markers across its genome.
What it Tells You?
- Breed Ancestry: This is the headline act. The test compares your dog’s DNA against reference databases containing profiles from thousands of purebred dogs worldwide and established mixed-breed populations. Algorithms estimate the most likely breed combinations and their percentages back through recent generations (usually 3-5). Accuracy is generally high for recent purebred ancestry, but becomes more probabilistic the further back or more mixed the lineage.
- Genetic Health Screening (Optional but Common): Many tests screen for known genetic mutations associated with specific inherited diseases (like PRA blindness, MDR1 drug sensitivity, or degenerative myelopathy). This doesn’t diagnose current disease, but tells you if your dog carries risk variants.
- Traits: Curious about why your dog has a curly tail or blue eyes? Tests often report on genes influencing physical characteristics like coat color, texture, and certain body features.
- Relatives (Bonus!): Some services maintain databases where you can find genetic relatives of your dog – a fun surprise for many owners.
These tests give you answers about your dog’s biological heritage and potential health risks.
It’s not perfect, particularly for very rare breeds or “complex” mixes!
Purebred or Mixed?
For some owners, the answer matters deeply. Those with rescue dogs want to solve the mystery of their mix.
Others paid top dollar for a purebred puppy but notice similarities to another breed (like a Sarplaninac and Caucasian Shepherd) and want scientific confirmation.
Then some owners prioritize health above everything else. A DNA test can reveal genetic disease risks – though it doesn’t mean the dog will end up with them.
These, in my opinion, are the main reasons people test their dogs (write your opinion in the comments below).
Marketplace Test
When CBC Marketplace tested two mixed-breed dogs (Molly and Loki) across four DNA companies, the results were shockingly different.
Wisdom Panel listed 19 breeds for Molly, while Embark called her a “100% Arabian village dog.” Loki’s results were just as erratic – Wisdom Panel detected 23 breeds, while Embark labeled him a “West Asian village dog.”
Even a purebred Great Dane, Quinn, was misidentified as part Staffordshire terrier (DNA My Dog) or even 100% Chihuahua (Accu-metrics), despite weighing 52kg.
Human DNA? No Problem for Some Tests
Two companies (DNA My Dog and Accu-metrics) went a step further by assigning dog breeds to human DNA.
A CBC reporter’s sample was identified as “part beagle and basenji” by one company, while the same sample was labeled “Central Asian shepherd and mastiff” by another.
Only Embark and Wisdom Panel correctly flagged human DNA as invalid.
Why the Huge Discrepancies?
Experts point to three main problems:
- Incomplete databases – Many tests lack genetic references for rare breeds or village dogs, forcing unreliable guesses.
- Flawed algorithms – When no clear match exists, tests default to the “closest” breed, creating fictional results.
- Suspicion bias – Accu-metrics’ absurd Chihuahua result for a Great Dane suggests some companies may skew results based on user guesses.
While premium tests (Embark, Wisdom Panel) correctly identified the purebred dog and rejected human DNA, their mixed-breed results still varied drastically.
Budget tests (DNA My Dog, Accu-metrics) were completely unreliable.
The takeaway? Breed identification still isn’t an exact science – useful for general ancestry clues, but don’t take it as the final word.
For health insights, stick with tests backed by veterinary research. For breed analysis, take the results with a grain of salt.
DNA database
Now, let’s talk about the Sarplaninac breed. I’ve written before about one of our dogs, bought as a puppy from another kennel, that turned out to be Šarplaninac + another breed.
As responsible breeders, we didn’t allow this dog into our breeding program and instead found him a new home.
But imagine this: that same dog stayed with us, became a champion through dog shows, and entered the official breeding database through DNA profiling??
Šarplaninac in the 1990s
Keeping the Šarplaninac breed pure was a real challenge in the 1990s. Many “quick-breeders” began crossing Šarplaninac with other breeds to get bigger dogs, completely ignoring the breed standard.
The result was tragic – pseudo-breeds that only looked like true Šarplaninac, while being genetic hybrids underneath.
“Such “hybrids” couldn’t get past our kennel either.
Now I’ll show you one of our puppies (end of the 90’s) where the mixed heritage was immediately apparent. If you’re wondering “why” – just check the official breed standard.
Pay close attention to the section describing the head.
Fun Facts: The puppy was sold for 700 German marks and grew to over 85 cm at the withers.
Conclusion
For most breeders, DNA tests matter for two things: protecting health (screening for potential hereditary diseases) and DNA profiling, which prevents falsified pedigrees and helps detect inbreeding.
For pet owners, though, the problem is with DNA databases that claim to determine breed ancestry. With the Šarplaninac breed, dogs that fall far outside the breed standard shouldn’t be the foundation of such a database – let alone decide what percentage of a dog belongs to the breed or not.
Until real changes are made (strict controls and transparency) our kennel will not be part of this system.
Are DNA Tests Mandatory in Every Country? – No! As an example, let’s look at the American Kennel Club requirements. AKC mandates DNA profiling only for:
- Stud dogs used for semen collection (both frozen and fresh extended use)
- Frequently Used Sires (for litters born after July 1, 2000)
- Imported breeding stock registered after March 1, 2006 [1]
Everything depends on agreements within a kennel club or whether a National Cynology Association mandates DNA testing (as a requirement for pedigree issuance).
