Duck liver is rich in vitamins A, B, D, iron, potassium and other minerals and a variety of amino acids, which is helpful to enhance the immune system and liver function of dogs. However, duck liver also contains high fat and cholesterol, so it can't be overfeed, otherwise it will cause diarrhea, bloating, indigestion and other symptoms, and even damage the dog's liver and heart. The correct way for dogs to eat duck liver is to cook or roast it before feeding it and cut it into small pieces to avoid choking the esophagus. Feed after meals, no more than twice a week, and the amount of feeding should be appropriate each time. If the dog is unwell, stop feeding immediately and seek medical advice.