Nutritional cardiomyopathy is a type of heart disease that occurs due to deficiencies in essential nutrients, particularly taurine and selenium. It is most commonly seen in certain breeds of dogs, such as Doberman Pinschers and Boxers, and can lead to weakened heart muscles and impaired heart function. Symptoms of nutritional cardiomyopathy may include lethargy, coughing, and difficulty breathing. Treatment typically involves dietary changes to ensure adequate nutrient intake, along with possible supplementation. Early diagnosis and intervention are crucial for improving the prognosis and overall health of affected animals.