British Longhair (may also referred to as British Shorthair Variant) and British Shorthair.
NOTE: 1) British Shorthair or Longhair cats used as outcrosses must be proven to be clear of Polycystic Kidney Disease (PKD1) by DNA test.
2) British Shorthair or Longhair cats used as outcrosses must be over three years old and must be screened clear of HCM by echocardiogram scanning within the previous 12 months.
All colours and patterns are allowed, including Burmese Colour Restriction and Tonkinese Colour Restriction, but with the exception of the Siamese Colourpointed Patten, with or without white. Any amount of white is allowed e.g. white spots on paws, back, chest or belly; a blaze, a locket, white tip on tail, etc.
RagaMuffins and RagaMuffin Variants may be registered on the Active Register, at the breeder’s request, only if:
1. They have been demonstrated to be clear of the R820W mutation which causes HCM (Hypertrophic Cardiomyopathy) and the PKD1 mutation which causes Polycystic Kidney Disease, by DNA testing from a reputable laboratory. Official confirmation of the test results are required and should include the microchip number of the cat tested.
2. They are from parents deemed clear because of the results from the testing of cats (as in A.1) on every line of the pedigree in previous generations. Pedigree line in this case refers to both parents, or all 4 grandparents, 8 great-grandparents, 16 great-great-grandparents and so on, or any combination of the same inclusive of both the sire’s and dam’s ancestor