by Beatriz Taques
The generational progression of the Brazilian Bull breed follows a simple mathematical rule based on the lower F level of the parents.
The general rule is: The puppy's generation will always be the lower F of the parents +1.
In other words, when two dogs of different generations are crossed, the puppy will belong to the generation immediately after that of the parent with the lower F level. When an F4 (purebred) dog is used in the cross, the same rule applies.
Practical Examples of the Rule:
F1 = F0 X F1 F2 = F1 X F1 F3 = F2 X F2 PC = F3 X F3
F0 X F2 F1 X F2 F2 X F3 F3 X F4+
F0 X F3 F1 X F3 F2 X F4
F0 X F4 F1 X F4
F0 (zero) = Every outside breed is considered an F0; breeds that take part in the development: American Bully, American Bulldog, Olde English Bulldog, American Staffordshire Terrier.
PC = Pure by Crossbreeding (F4 or higher).
Importance of the Rule
This genetic structure allows control over the stabilization of the breed's characteristics. When crosses with early generations (F1 and F2) are used, selective refinement is still expected. With this method, the Pit Monster (Brazilian Bull) breed can be consolidated in a predictable, structured way, ensuring the genetic uniformity and stability of the breed over the generations.
