DNA analysis can provide valuable information about relationships among animal populations.
Researchers can compare genetic markers, investigate inherited traits, and sometimes identify patterns suggesting shared ancestry.
In principle, studies of American rabbits and plausible ancestral breeds could help clarify aspects of their genetic relationships.
But there are major limitations.
The original rabbits used in Salisbury's breeding program lived more than a century ago.
Their authenticated genetic material may no longer be available.
Some of the proposed ancestral populations have changed considerably through subsequent breeding, while others may have disappeared.
Modern representatives of a breed are not necessarily genetically identical to the animals that existed in 1917.
Furthermore, selective breeding can alter the frequency of genetic variants over many generations.
Even if modern American rabbits share DNA patterns with Blue Vienna or Flemish Giant rabbits, that would not automatically establish the exact crosses Salisbury made.
A shared genetic feature could reflect more distant common ancestry or historical exchanges between breeding populations.
Therefore, a genetic study might strengthen or weaken certain hypotheses without producing a complete reconstruction of the original breeding program.
As of the sources reviewed for this article, no definitive genetic reconstruction establishes Salisbury's exact combination of founding breeds.
The mystery remains open.
And perhaps that uncertainty is one of the reasons the American Blue continues to attract interest.
Its known history is substantial enough to make the breed important, while its missing details invite further investigation.
A Gentle Rabbit With an Extraordinary Legacy
Beyond the historical questions, the American rabbit continues to be appreciated for qualities that made it valuable more than a century ago.
Its calm temperament, substantial size, and distinctive appearance appeal to heritage livestock enthusiasts.
The breed is often described as gentle, although individual rabbits naturally vary in personality.
Like all domestic rabbits, American Blues require appropriate nutrition, adequate living space, opportunities for exercise, and attentive veterinary care.
Their size means that housing and handling should account for the needs of a larger animal.
A quiet temperament should never be mistaken for a lack of physical or behavioral requirements.
Responsible ownership also includes understanding that rabbits are social, active animals whose welfare depends on suitable environments and consistent care.
For breeders, maintaining the American rabbit involves an additional responsibility: protecting its traditional characteristics without compromising health and welfare.
The breed's survival depends on people who see these animals as more than interesting exhibits.
They are living representatives of an agricultural tradition that has passed through many generations.
Every carefully maintained breeding line contributes to the continuation of a story that began long before modern owners were born.
More Than a Century Later, the Story Continues
In 1917, Lewis H. Salisbury introduced a rabbit that would become one of America's distinctive heritage breeds.
He could hardly have anticipated every change that would follow.
The American Blue would gain official recognition, become commercially popular, acquire a white variety, experience a dramatic decline, and eventually become the focus of organized conservation efforts.
Throughout those changes, one unanswered question endured.
Which rabbit breeds did Salisbury originally combine?
Historians have examined the available records.
Breeders have studied the animal's body shape and coat.
Experts have proposed likely ancestral breeds based on historical and physical evidence.
Yet the exact formula has never been conclusively established.
There is something compelling about that uncertainty.
In an age when so much information is recorded and shared instantly, the American Blue reminds us that earlier generations often left behind incomplete records.
The absence of a complete explanation does not diminish Salisbury's achievement.
If anything, it draws attention to the patience and selective breeding required to establish a recognizable domestic animal population.
He helped create a rabbit distinguished by its deep blue coat and characteristic body shape.
More importantly, he helped establish a breed that survived far beyond the period in which it first became popular.
Today's American Blues are connected to that history through generations of breeding and preservation.
They also remind us that the survival of a heritage breed is never guaranteed.
Without the continued attention of responsible breeders and conservation organizations, historically important animal populations can become increasingly vulnerable.
That is why the American Blue's future matters just as much as its past.
Its ancestry may remain uncertain, but its identity is well established.
The breed is a living reminder that agricultural history is written not only in books, buildings, and machinery, but also in the animals that people have raised and cared for over generations.
And somewhere within the genetic history of the American Blue, traces of Salisbury's original breeding decisions may still remain.
Whether researchers will ever be able to interpret them with certainty is an open question.
For now, the remarkable rabbit that first attracted attention in California more than a century ago continues to carry its mystery.
The breeder's exact recipe remains unknown.
But the beautiful animal he helped create is still here.
And that may be the most extraordinary part of the story.
Sources and References
The following sources provide historical documentation, breed characteristics, conservation information, and relevant genetic background.
1. The Livestock Conservancy — American Rabbit. Comprehensive breed profile covering Lewis H. Salisbury, the 1918 recognition, possible ancestral breeds, size, temperament, historical uses, and conservation status. https://livestockconservancy.org/american-rabbit/
2. Breeders of the American Rabbit National Specialty Club — Breed History. Specialist historical account examining the development of the American rabbit, its first exhibition in 1917, the official standard, and uncertainties surrounding its founding genetics. https://americanrabbits.org/breed-history/
3. American Rabbit Breeders Association Digital Library — Guide Book and Standard, 1926–1927. Historical primary-source publication documenting the American Blue and identifying Lewis H. Salisbury as its early exhibitor. https://arbalibrary.org/item/1
4. The Livestock Conservancy — Heritage Rabbits in American History (April 15, 2026). Historical discussion of American rabbit breeds, their agricultural uses, development, and changing commercial importance. https://livestockconservancy.org/2026/04/15/heritage-rabbits-in-american-history/
5. American Rabbit Breeders Association — Recognized Breeds. Official breed reference providing information on the American rabbit and its recognized Blue and White varieties. https://arba.net/recognized-breeds/
6. Breeders of the American Rabbit National Specialty Club — American Genetics: Achieving a True-blue White in Two Easy Steps. Specialist explanation of rabbit coat-color inheritance and genetic relationships between American Blue and American White varieties. https://americanrabbits.org/2023/05/01/american-genetics-achieving-a-true-blue-white-in-two-easy-steps/
7. Breeders of the American Rabbit National Specialty Club — The Rise and Fall of the American Rabbit: How History Has Shaped Our Breed. Historical account exploring the breed's development, the involvement of early breeders, and its changing popularity. https://americanrabbits.org/the-rise-and-fall-of-the-american-rabbit-how-history-has-shaped-our-breed/
Editorial note: The American Blue's history, recognition, physical characteristics, and conservation background are supported by specialist and historical sources. The precise combination of ancestral breeds remains unverified, and no specific motive for Salisbury's decision not to disclose his breeding methods has been established.