Dogs with left-sided heart failure, or those with significant fluid in the lungs, may not be able to get enough oxygen from their lungs to their blood stream. In such cases, a dog may benefit from oxygen supplementation.
Grain-free dog foods may be linked to heart disease. Learn more about the food brands that were fed in these cases and if you should be concerned.
Signs of heart disease include: weakness, lethargy, shortness of breath, and coughing. If you notice any of these symptoms, take your pet to a veterinarian right away.

Grain-free means that the food doesnt have normal carbohydrate sources in it. The food producers use alternatives like peas, lentils, and legumes, which are all linked to heart issues in dogs. Negative health effects in dogs hearts build up over time.
In this blog post, we will delve into the association between grain-free dog food and heart problems, particularly focusing on DCMa condition that forms a troubling pattern among dogs that eat these diets.