How Pet DNA Tests Work and What They Show

A pet DNA test uses a saliva sample from your dog or cat to identify breed ancestry, genetic health risks, and sometimes behavioral traits. You order a kit online, swab your pet's cheek or gums at home, mail the sample to the company's lab, and receive results in two to eight weeks. The test does not diagnose disease — it flags whether your pet carries genes associated with certain conditions, which means risk exists but does not may provide your pet will develop that condition.

The most common pet DNA tests come from companies like Embark, Wisdom Panel, and Basepaws. Each maintains a different genetic database and uses different health screening panels, so results can vary slightly between companies. A test typically costs between $60 and $200 depending on how many health conditions the company screens for and whether you choose additional services like a breed-specific report or behavioral analysis.

The breed identification portion compares your pet's DNA against thousands of known breed profiles. If your dog is a mixed breed, the test will show percentages of each breed detected — for example, 40% Labrador, 30% German Shepherd, 20% unknown. Cats are less commonly tested for breed because most pet cats are domestic shorthairs or longhairs without formal breed registration, though purebred cat owners sometimes use DNA tests to confirm lineage.

Key Takeaways

  • Pet DNA tests identify breed mix and screen for genetic health risks, but they do not diagnose disease or replace a veterinary exam.
  • Results show whether your pet carries genes linked to conditions like hip dysplasia or heart disease, not whether your pet will definitely develop them.
  • Different companies test for different health conditions, so the same pet may show different results from Embark versus Wisdom Panel.
  • A DNA test costs $60 to $200 and takes two to eight weeks; results are most useful if you share them with your veterinarian.
  • Breed identification is most reliable for purebred or first-generation mixed dogs; results for heavily mixed ancestry are less precise.

What Health Information a DNA Test Can and Cannot Tell You

Pet DNA tests screen for genetic predispositions — inherited traits that increase risk. A positive result for, say, progressive retinal atrophy (PRA) means your pet carries the gene variant associated with that eye disease. It does not mean your pet has PRA now or will definitely develop it. Some conditions require two copies of a gene to manifest; others show up with just one. Your veterinarian can interpret what a specific result means for your individual pet's health outlook.

The health conditions screened vary by company and test tier. Embark's standard test screens roughly 200 genetic health conditions; Wisdom Panel's premium test covers about 150. Both include common concerns like hip dysplasia risk, heart disease markers, and certain cancers. Neither test screens for infectious diseases, parasites, or conditions caused by environment or diet — those require traditional veterinary testing.

A negative result does not may provide your pet will never develop a condition. It means the test did not detect the specific gene variants the company screens for. Your pet could still develop a disease through other genetic pathways, environmental factors, or age-related decline. DNA testing is one data point, not a complete health forecast.

Breed Identification: Accuracy and Limitations

Breed identification works well for dogs with recent purebred ancestry or clear first-generation mixes. If your dog is half Golden Retriever and half Poodle, the test will usually detect both breeds accurately. If your dog is the result of five generations of mixed breeding, the test may show multiple small percentages and a larger "mixed" or "unknown" category because the ancestry is too distant or complex to resolve.

Breed databases are built from DNA samples submitted by owners and breed clubs, so they are more complete for popular breeds like Labrador Retrievers and German Shepherds than for rare or regional breeds. If your dog descends from a breed not well represented in a company's database, the test may misidentify it or classify it as "unknown." Comparing results from two different companies can sometimes clarify ancestry when one company has better data for a particular breed.

For cats, breed identification is less common because most pet cats are not registered with breed organizations. Purebred cat owners may use DNA tests to verify pedigree, but results are less meaningful for domestic cats. Some companies offer cat DNA tests primarily for health screening rather than breed identification.

Choosing Between Different Pet DNA Test Companies

The main differences between companies are the size of their genetic database, the number of health conditions they screen, and the format of their results. Embark and Wisdom Panel are the largest dog DNA testing services and have the most extensive breed databases and health screening panels. Basepaws is the most established cat DNA test. Smaller companies like DNA My Dog and Orivet exist but have smaller databases and may be less reliable for mixed-breed identification.

Before ordering, check which health conditions each company screens for and whether those conditions are relevant to your pet's breed or age. If your dog is a breed prone to heart disease, choose a test that screens for cardiac conditions. If you are mainly curious about breed mix, a basic test from any major company will work. Read reviews from other pet owners to see whether the company's customer service responds to questions about results.

Some veterinary clinics offer DNA testing directly, sometimes at a discount if you order through them. This can be convenient, but the underlying test is usually still run by one of the major companies — you are paying a markup for the clinic's handling. Ordering directly from the company's website is typically cheaper.

What to Do With Your Results

Share your results with your veterinarian, especially any health risk flags. Your vet can explain what each result means for your specific pet, recommend screening tests if appropriate, and adjust your pet's preventive care plan. For example, if your dog carries genes linked to hip dysplasia, your vet may recommend joint supplements, weight management, or periodic X-rays to catch problems early.

Breed identification results are useful for understanding your pet's likely size, energy level, and temperament as they mature. If your mixed-breed puppy is 30% Border Collie, you can expect herding instincts and high exercise needs. This information helps you plan training, exercise routines, and environmental enrichment.

Do not use DNA results to make breeding decisions unless you are working with a veterinarian or breed club. A single DNA test does not provide enough information to determine whether a pet should reproduce. If you are considering breeding your dog, work with a breed club and your vet to understand the full genetic picture, including traits not captured by a single DNA test.

Privacy and Data Handling

When you submit a DNA sample, you are also sharing your pet's genetic data with the company. Read the privacy policy before ordering to understand how the company stores, uses, and shares that data. Most major companies state they will not sell your data to third parties without consent, but policies vary. Some companies allow researchers to use anonymized genetic data for studies; others keep data private unless you opt in to research participation.

If privacy is a concern, check whether the company allows you to delete your data after receiving results. Some do; others retain samples indefinitely. A few companies have faced lawsuits or regulatory action over data practices, so reviewing recent news about a company before ordering is worth the time.

Frequently Asked Questions

Can a DNA test tell me if my pet has a disease right now?

No. A DNA test shows genetic risk, not current disease. If your pet shows symptoms like limping, vision problems, or lethargy, see your veterinarian for a physical exam and diagnostic tests. DNA results are background information, not a substitute for veterinary diagnosis.

How accurate is breed identification for mixed-breed dogs?

Accuracy depends on how mixed your dog is. If your dog is half one breed and half another, identification is usually 90% accurate or better. If your dog is a complex mix of five or more breeds, accuracy drops and you may see a large "unknown" percentage. Results are most reliable from companies with large breed databases like Embark and Wisdom Panel.

What if my dog's DNA results show a health risk I was not expecting?

Schedule a vet appointment to discuss the result. Your vet can explain whether the risk is significant for your dog's age and breed, recommend preventive screening, and suggest lifestyle changes that may reduce risk. Many dogs with genetic risk factors never develop the associated disease.

Do I need to do a DNA test if my dog is purebred?

Not for breed identification — you already know the breed. A DNA test is still useful for health screening, especially if your breed is prone to genetic conditions. Purebred dogs often benefit from knowing their genetic risk profile so your vet can monitor for early signs of disease.

How long does it take to get results?

Most companies return results in two to eight weeks from the time they receive your sample. Processing time depends on lab volume and the complexity of the analysis. Check the company's website for current turnaround times before ordering.