The Science of Coat Color Taught by Cassandra Muro Every color in every dog traces back to two pigments and a handful of genes. Understanding how those genes work — and how to read the test results that reveal them — is what separates a breeder who guesses from a breeder who knows. This course covers the complete foundation of canine coat color genetics: how pigment is produced and expressed, how to read DNA test results from any lab, how to predict litter outcomes using Punnett squares, and how to apply all of it to real breeding decisions. Practical, breed-neutral, and built for working breeders. Your instructor: Cassandra Muro is a Chihuahua breeder and one of the most recognized voices in the dog community on coat color genetics. Breeders across breeds seek her out when they need answers — and now she's teaching it here. Enrolled students receive a certificate of completion upon finishing the course: The Science of Coat Color — CBSA Elective Credit, which counts toward the CBSA Certified Master Breeder credential.