This 1 July 2019 video from the USA says about itself:
Pet owners concerned over potential link between pet food and dog deaths
The Food and Drug Administration said the potential link between “grain free” food and canine heart disease is a complex issue that involves other factors. However, the FDA urged pet owners to watch their pets closely for any sign of health trouble, track what foods their dogs eat and report any pet food complaints.
16 DOG FOOD BRANDS MAY BE LINKED TO CANINE HEART DISEASE Federal health officials have identified 16 dog food brands that may be linked to a mysterious rise in canine heart disease, leading to warnings by veterinarians about popular “grain-free” diets. [HuffPost]