A Reference Library
The Boerboel Breed, In Depth
There is a lot written about the Boerboel, also known as the South African Mastiff, and a great deal of it is half folklore. This is our attempt at something different: a carefully researched, plainly sourced reference on the breed, what we can actually prove, and where the record runs out.
Why we built this
We breed Boerboels, and the same questions come up again and again: where the breed comes from, what it was really used for, how healthy it is, whether the dramatic stories are true. Most answers online repeat each other without checking anything. So we’re writing the version we wish existed: long, honest, and tied to real sources you can read yourself. Each piece below stands on its own. We’re publishing them as they’re finished, starting with the breed’s history.
New to the breed? Start here.
Boerboels Explained is the plain-English overview, what a Boerboel is, what it’s like, and whether it’s right for you, before you dive into the sourced articles below.
In this series
The True History of the Boerboel
Read nowWhere the South African Mastiff really came from, what it was bred to do, how it nearly disappeared, and which famous origin stories are folklore. Fully sourced.
Breed Genetics & Ancestry
Read nowWhat pedigree and DNA studies actually say about the breed's makeup, founder bottleneck, and inbreeding, versus the breed-composition claims that rest only on tradition.
Registries & the Breed-Politics Story
Read nowThe SABBS / KUSA / breakaway-registry story, the Animal Improvement Act, the court fights, and the long-running argument over black coats, explained without taking sides.
The Breed Standard: History & Original Text
Read nowWhat the standard actually says and how it changed: the recovered original 1983 text, why the “1987 first written standard” is a myth, the colour rule that flipped from excluding to accepting black, the appraisal, and every located version. Fully sourced.
Boerboel Bite Force: What the Science Says
Read nowNo one has ever measured it, and the viral PSI numbers are invented. The real dog bite-force science, the formula that sets it, and a defensible estimate (~650–950 N at the canines), fully sourced.
How Strong Is a Boerboel? Strength vs Other Breeds
Read nowOne of the most powerful breeds by mass, and one of the most exaggerated online. What kind of strength the Boerboel actually has, how it compares to Cane Corsos, Pit Bulls and Mastiffs, and why strength is not bite force. Sourced.
Boerboel Weight Pull: Records, Rules & the Numbers
Read nowTwo Boerboels each moved a documented 22,039 lb on rails at a UPF event in May 2026, one of them a son of our stud Hakeem. The official figures, how the sport works, why surface and pound-for-pound ratio decide everything, and why we still do not call it a world record.
Dog Weight Pull Records: What Dog Can Pull the Most Weight?
Read nowThere is no single official record, because results are not comparable across organizations or surfaces. The heaviest documented figures, pound-for-pound vs absolute, and where the Boerboel fits.
Health & Lifespan, In Depth
Read nowHow long Boerboels really live, why the viral hip-dysplasia numbers don't hold up, the one breed-specific disease gene, the standout cruciate risk, bloat prevention, and what “health-tested” should actually mean. Fully sourced.
Temperament & Behavior
Read nowWhat the behavioral science actually says: why breed is a weak predictor of an individual dog, what a guardian breed really is, aggression and bite-risk handled honestly, and how little Boerboel-specific data exists. Fully sourced.
How we research these pages
We lean on primary and authoritative sources first (breed registries, kennel clubs, peer-reviewed studies, government records, court judgments, museums, and the handful of serious breed historians) and we treat breeder blogs and content farms as tradition to be checked, not facts to be repeated. Where good sources disagree, we say so rather than picking the prettiest version. Where the record simply runs out, we say that too.
Every factual claim in these articles is tied to a numbered source you can open and read for yourself. If you find something we got wrong, we’d genuinely like to hear it. Reach us through our contact page.
Start with the breed’s true history
The South African Mastiff has a more interesting, and more honest, story than the legend.