Mixed-Breed DNA Tests and Bully Breeds

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three dogs in the grass
The mixed-breed DNA tests agree that each of my three dogs (from left: Otto, Woody, and Boone) has a preponderance of "bully" breeds in them. Each was adopted from my local shelter (in 2008, 2016, and 2022, respectively), and I feel like the breeds seen in all three of their results, from either company, make a pretty good representation of the breeds in this part of the world. ©Nancy Kerns

I just received the results of my youngest dog’s mixed-breed DNA test from Embark; I already had results from Wisdom Panel. Over the years, I’ve submitted DNA samples from all three of my dogs to both of the most reputable providers of mixed-breed identification tests. In my opinion, the results have gotten more accurate over time – and they even concur on much of the information returned. With one interesting exception – see if you can find it.

Otto

Embark

21.3% American Pit Bull Terrier

14.1% Australian Cattle Dog

13.2% German Shepherd Dog

12.3% Chow Chow

10.3% Labrador Retriever

8% Border Collie

4.3% Rottweiler

16.5% “Supermutt”

Wisdom Panel

12.5% American Staffordshire Terrier

12.5% Australian Cattle Dog

12.5% Border Collie

12.5% Chow Chow

12.5% German Shepherd Dog

37% Mixed Breed Groups

Woody

Embark

40.8% American Pit Bull Terrier

30.3% Labrador Retriever

19.9% American Staffordshire Terrier

9.0% Olde English Bulldogge

Wisdom Panel

62.5% American Staffordshire Terrier

25% Labrador Retriever

12.5% Mixed Breed Groups

Boone

Embark

42.0% American Pit Bull Terrier

29.1% American Staffordshire Terrier

8.1% American Bulldog

8% Boxer

4.7% English Springer Spaniel

Wisdom Panel

36% American Staffordshire Terrier

29% American Pit Bull Terrier

6% Boxer

6% German Wirehaired Pointer

5% American Bulldog

5% Springer Spaniel

4% Great Dane

3% Australian Cattle Dog

2% German Shorthaired Pointer

2% Labrador Retriever

2% Chow Chow

Embark thinks that ALL of my dogs have more American Pit Bull Terrier in them than anything else; Wisdom Panel thinks that all of my dogs have more American Staffordshire Terrier in them than anything.

Despite owning three of these dogs with an apparent preponderance of “bully” breeds in them, I don’t know how American Pit Bull Terriers and American Staffordshire Terriers can be so interchangeable. Who can explain this, in simple terms? I’ve read a dozen articles and am still mystified. At least the companies are consistent in their results!