Resources
This page brings together practical resources for anyone working with or learning about Dominant Blue Eyes (DBE) in cats — where to test, what to read, and where to connect with other breeders.
A note on what you'll find here: the materials on this page are practical and educational, and most are not peer-reviewed. They reflect experience, opinion or general guidance rather than published research, so treat them as useful starting points rather than established fact. For the peer-reviewed studies behind DBE, see the Scientific Literature page.
Genetic Testing
The first laboratory with dedicated testing for PAX3-associated Dominant Blue Eye (DBE) variants, including DBE-CEL, DBE-ALT, DBE-RE, DBE-AGO and DBE-CDC. PetGeno also provides testing for numerous inherited diseases, coat colour traits and blood type relevant to cat breeding.
Recommended Watching
CORIN and DBE Variants In Cats: What We Know And What Remains To Be Explored by professor Marie Abitbol
Recommended Reading
Messybeast – Dominant Blue Eyes (DBE) Genetics Studies by Sarah Hartwell (historical review and breeder-oriented overview).
DBE History & Research — how the four PAX3 variants were discovered and what the science shows.
DBE Latent — why a cat can carry a DBE variant without showing blue eyes.
Eye Colour Development in Cats — how kitten eye colour develops, and why appearance alone can't confirm DBE.
DBE Community
Private FB Group for DBE breeders only - please contact us for the invitation.