There has been a lot of focus and discussion about grain free pet foods and heart failure in dogs. The FDA has been involved and has been investigating certain grain free pet foods that contain peas, lentils and potatoes. Although it seems that this is still being studied, here is a link to an article that helps to explain the current status and what we can do.
https://justinshmalberg.com/blog
https://justinshmalberg.com/blog