Can a half brother breed a half niece in dogs?

Yes, a half-brother can breed with a half-niece in dogs, as they are not closely related enough to pose significant genetic risks. A half-brother shares one parent with the half-niece, making them only half-siblings. However, breeding closely related dogs can still lead to potential health problems in the offspring, so it's important to consider the genetic implications and consult with a veterinarian or a breed expert before proceeding.