Burmese head defect
A fatal skull and facial malformation traced to the Burmese side of the breed's ancestry (the Australian Mist was founded on roughly half Burmese stock). A cat with two copies of the mutation is stillborn or requires euthanasia; a single copy causes no defect but can shorten the face.
What to ask for
UC Davis VGL Burmese head defect (ALX1) DNA test result, on both parents

