Sweden I've a 3yo blue scottish fold named Tuffsen, he does not have the folded ear gene but five out of 8 kittens from his litter do. Some cats that carry the gene may under no circumstances receive the sickness. But In case your Sphynx cat does establish hypertrophic cardiomyopathy, https://louispyfsy.glifeblog.com/35508822/the-definitive-guide-to-maine-coon