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.
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Congenital 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 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.
Read moreReading a White Shepherd Genetic Report: What Each Result Actually Means
A line-by-line walkthrough of a typical canine DNA panel report applied to white German Shepherd breeding. What to look at, what to ignore, and how to build a complete picture of a dog's genetic status.
Read moreDegenerative Myelopathy and the SOD1 Mutation in Shepherds
A complete guide to degenerative myelopathy in German Shepherds and Berger Blanc Suisse, covering the SOD1 gene mutation, inheritance pattern, testing recommendations, and why this condition is entirely independent of white coat color.
Read moreDNA Testing for the E Locus: A Breeder's Practical Guide
How DNA testing identifies the e/e, E/e, and E/E genotypes at the Extension locus in German Shepherds, including test accuracy, laboratory options, and interpreting results for breeding decisions.
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