Jack went to the vet for suspected cystitis and when she checked his heart she said he had a heart murmur. His mum had it and it didn't effect her but she died of FIP at 2 and a half so we don't know if she would have had problems later. His sister also had it and she died from heart failure at 16 months. Jack is going for a scan in two weeks when the right vet is in but in the short term what conditions might I be looking at that are congenital and killed Jasmine so quickly but has so far not had any effect on Jack.