Linebreeding, Inbreeding, Outcrossing & Advance Breeding Methods of the Top Dog & Horse Bloodlines

Original Article Featured in Venomline on Medium


When it comes to American Bully breeding, there are various methods that breeders employ to produce exceptional offspring. From linebreeding to outcrossing, each breeding method has its own advantages and considerations.

The most successful dog and horse bloodlines have achieved their status through a combination of strategic breeding methods. Linebreeding, outcrossing, inbreeding (when used responsibly), selective breeding, and performance testing are among the preferred methods employed by the top dog & horse bloodlines.


Breeding methods have played a crucial role in the success and development of the most famous dog and horse bloodlines. Most renowned bloodlines have achieved their status through careful selection and strategic breeding practices. Each method serves a specific purpose in maintaining and improving the bloodline’s traits and characteristics.

By carefully selecting and pairing individuals based on their genetic background, physical attributes, and performance abilities, breeders can create and perpetuate bloodlines that are renowned for their excellence and distinction.

In this article, we’ll explore the most successful breeding methods employed by the top bloodlines and shed light on the preferred methods used by the best in the field.

ABKC Champion Homicide • Linebred GrCh Chumper


One of the most commonly used breeding methods in American Bully breeding is linebreeding.

Linebreeding involves breeding dogs that are closely related, such as siblings or parent-offspring pairs. Linebreeding is a commonly used method in both dog and horse breeding. It involves breeding individuals that are closely related, such as parent-offspring or sibling pairs. This method aims to concentrate desirable traits and characteristics within a bloodline.

By selecting closely related individuals with exceptional qualities, breeders can increase the likelihood of producing offspring that exhibit the desired traits consistently. Linebreeding is often favored by famous bloodlines as it helps maintain the integrity and distinctiveness of their lineage.

A real life example of linebreeding can be found by looking at Ch Homicide’s pedigree. Homie is the result of linebred 2X GrCh Chumper.

Venomline’s King Koopa • 2X Venom


On the other hand, inbreeding is a more extreme form of linebreeding. Inbreeding, while controversial, has been utilized by some famous bloodlines to consolidate and intensify desirable traits. This method involves breeding closely related individuals, such as full siblings or parent-offspring pairs. Inbreeding can help fix certain traits and produce offspring that consistently exhibit the desired characteristics.

It is important to note that inbreeding should be approached with caution by experienced breeders who understand the potential risks involved. Responsible inbreeding requires thorough pedigree analysis, health screening, and careful selection to minimize the chances of passing on genetic issues.

While it can be a useful tool for fixing certain traits, it also increases the risk of genetic issues and health problems. Therefore, inbreeding should be approached with caution and only by experienced breeders who understand the potential risks involved.

TLB/Venomline’s King V • Venom meets 2X Casablanca


Outcrossing is another breeding method employed by successful bloodlines. It involves breeding individuals from unrelated bloodlines. This method introduces new genetic diversity into the bloodline, which can help improve overall vigor and reduce the risk of inherited health issues.

Outcrossing is often used strategically to introduce new traits or enhance specific aspects of the breed. By carefully selecting outcrossed individuals that complement the existing bloodline, breeders can achieve a balance between maintaining the desired traits and introducing fresh genetic material.

Outcrossing can be beneficial for breeders who want to introduce new traits or improve certain aspects of their breeding program. However, it is important to carefully select the outcrossed dogs to ensure compatibility and maintain the desired breed standard.


Pedigree analysis plays a crucial role in American Bully breeding. It involves studying the ancestry and lineage of a dog to understand its genetic background and potential for passing on desirable traits.

By analyzing pedigrees, breeders can identify dogs with strong genetic contributions and evaluate the likelihood of producing offspring with the desired characteristics. Pedigree analysis is an essential tool for breeders to make informed decisions and plan their breeding programs effectively.

If you have not read Becoming An American Bully Breeder: Part I & Part II, we suggest first reading those before returning back to this article. We have included links to each below.

See: American Bully Breeding 101 Part I: Deciding on a Class

See: American Bully Breeding 101 Part II: Purchasing Foundation Dogs


Selective breeding is a fundamental method employed by successful bloodlines. It involves carefully selecting individuals with superior traits and characteristics for breeding purposes. This method focuses on evaluating the phenotype and genotype of potential breeding stock to ensure they possess the desired qualities.

By consistently selecting and breeding individuals with exceptional traits, breeders can enhance and refine the bloodline over generations. Selective breeding is a preferred method used by the best bloodlines as it allows for the preservation and improvement of specific traits that define their lineage.

See: How Important are Foundation Females to a Breeding Program?


Performance testing is an integral part of breeding methods employed by famous bloodlines, particularly in the horse industry. This method involves evaluating the working abilities, athleticism, and temperament. By assessing their performance in various disciplines, such as racing, jumping, or herding, breeders can identify individuals with exceptional abilities and incorporate them into their breeding programs.

Performance testing ensures that the bloodline not only possesses desirable physical traits but also excels in the intended purpose for which it was bred.


Lloyd Brackett’s method of dog breeding is a systematic approach that aims to improve the breed by carefully selecting and pairing dogs based on their genetic traits and performance. His method, also known as the Brackett’s Formula, has been widely used in several of the top dog & horse bloodlines. The American Bully breed, however is still too early in it’s development to comment on the efficacy of Brackett’s method on this breed.


Lloyd Brackett, a renowned figure in the field of dog breeding, had a unique perspective on the topic of inbreeding. While some breeders may view inbreeding as a controversial practice, Brackett believed that when done correctly and with careful consideration, inbreeding could be a valuable tool in improving a dog breed.

Brackett acknowledged that inbreeding, which involves breeding closely related individuals, could intensify the concentration of both desirable and undesirable traits within a bloodline. This concentration can be beneficial for fixing certain traits and producing consistent offspring that exhibit the desired characteristics. However, he also recognized the potential risks associated with inbreeding, such as an increased likelihood of inherited health issues and reduced genetic diversity.

To mitigate these risks, Brackett emphasized the importance of thorough pedigree analysis and understanding the genetic background of the dogs involved. By carefully selecting dogs with strong genetic contributions and evaluating their health records, breeders can minimize the chances of passing on genetic issues through inbreeding. Brackett also stressed the significance of phenotype evaluation in conjunction with inbreeding.

In the context of American Bully breeding, Brackett’s method focuses on evaluating and selecting dogs based on their phenotype and genotype. Phenotype refers to the physical characteristics and traits that are observable in a dog, such as size, structure, and temperament.

In addition to evaluating the phenotype, breeders also consider the genotype of the dogs. Genotype refers to the genetic makeup of a dog, including the genes responsible for specific traits. This involves analyzing the genetic background of the dogs, including any known genetic health issues or potential genetic strengths. By understanding the genetic makeup of the dogs, breeders can make informed decisions about which dogs to pair together to maximize the chances of producing healthy and high-quality offspring.

Brackett’s method also emphasizes the importance of performance testing. This involves evaluating the working abilities and performance of the dogs, such as their agility, obedience, and temperament. Performance testing helps breeders assess the dogs’ working capabilities and determine if they possess the desired traits beyond just their physical appearance.


To apply Brackett’s method in American Bully breeding, breeders start by thoroughly analyzing the pedigrees of potential breeding dogs. They look for dogs with a strong lineage that consistently produces desirable traits and characteristics. This analysis helps breeders identify dogs that have a higher probability of passing on these desirable traits to their offspring.

Once potential breeding dogs are identified, breeders evaluate their phenotype by assessing their physical attributes, such as body structure, muscle tone, and overall appearance. This evaluation helps breeders determine if the dog meets the breed standard and possesses the desired traits for the American Bully breed.

By combining the analysis of pedigree, phenotype, genotype, and performance, breeders using Brackett’s method can make informed decisions about which dogs to breed together. This systematic approach increases the likelihood of producing offspring that not only meet the breed standard but also possess the desired traits and characteristics that define the American Bully breed.

It is important to note that while Brackett recognized the potential benefits of inbreeding, he also emphasized the need for responsible breeding practices. Inbreeding should only be undertaken by experienced breeders who have a deep understanding of the breed, its genetic history, and the potential risks involved. Careful planning, thorough analysis, and a commitment to preserving the health and well-being of the breed are essential when considering inbreeding as a breeding method.

This method helps ensure that the offspring produced possess the desired traits and characteristics, ultimately contributing to the advancement and preservation of the American Bully breed.


Originally from Houston, Texas, we are now located in sunny South Florida. We are proud to have produced several ABKC Pocket American Bully Champions. Venomline dogs have been featured in Rolling Stone Magazine, BULLY KING Magazine, Bully Girl Magazine, in Music Videos and on television (NBC, Barcroft Animals, Big Dogz Tv)

Venomline is known for producing some of the thickest dogs in the world, without sacrificing conformation or health. Our dogs are known for having massive heads, dense bone, broad chests, wide shoulders, short muzzles, and being packed rock solid with muscle on short & compact frames.

Venomline Females

We are different than most kennels in the fact that we do not use a traditional kennel set up. Our dogs sleep in beds and are a part of our family, not kept locked up in kennels all day. We pride ourselves in producing dogs that have “wow” factor along with great temperament and athleticism despite the heavy muscle/bone they carry.

Our dogs are DNA & Health Tested, pups come with health certificate, ABKC registration paperwork, shots & de-worming as well as a health guarantee covering any genetic related issues. We ship semen (Stud Service) worldwide. We are also experienced and familiar with the import process and regulations for shipping semen to any country.


Top American Bully Studs 2023 — Venomline Pocket American Bully Stud Service, Available Studs, Stud Fees, Pedigree & Info.

For more information on American Bully Stud Service, Methods of Artificial Insemination (AI’s) & Confirming Pregnancy — and Preparing for your Litter’s Arrival — check out the article below.

See: American Bully Stud Service, Finding the Right Studs, AI’s, Breeding Tips & Timing — To Produce a Litter of Incredible Puppies


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