Hemophilia A and the F8 Gene: X-Linked Bleeding Disorders in Shepherds
Why hemophilia A strikes male shepherds and hides in their dams — the F8 gene, X-linked inheritance, the bleeding signs to watch for, and how to test.
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MDR1 (ABCB1) Drug Sensitivity: A Genetic Test That Saves Lives
One mutation can turn a routine dewormer or sedative into a poisoning. Here is what the MDR1/ABCB1 test tells you and how to act on each result.
Read moreCongenital Megaesophagus in White Swiss Shepherds: Why the German Shepherd Test Falls Short
A megaesophagus risk test built for German Shepherds turns out to be nearly useless in the Berger Blanc Suisse. Here is why, and the breeding lesson hiding inside it.
Read moreExocrine Pancreatic Insufficiency: The Genetics of Pancreatic Acinar Atrophy
EPI is overwhelmingly a German Shepherd disease, but it is not a simple recessive and there is no single DNA test. Here is why, and what breeders can actually screen for.
Read morePituitary Dwarfism in Shepherds: The LHX3 Mutation Explained
A recessive LHX3 mutation gives German Shepherds an underdeveloped pituitary, stunted growth, and a retained puppy coat. Here is the genetics and how to breed around it safely.
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