Some DCM can be caused by improper diets. I know I mentioned this in a different post. Back in the 70's thousands of cats were dying from DCM because the lack of Taurine in pet food. Is the problem back??
The lack of taurine in diets is indeed showing up again. I had no idea that Golden's are pre disposed to low taurine deficiencies and because of that, they can also develop DCM. A lady on the largest canine cancer study (Golden Retriever Lifetime Study - 3000 strong ) found that the current trend in food (bump protein count up with VEGETABLES, not MEAT) can cause too low taurine if not checked.
Low Taurine in Grain Free Foods