Dogs can eat chicken hearts and duck hearts, but in moderation. Chicken heart and duck heart are rich in protein, vitamins and minerals, which can help dogs enhance their immunity, maintain normal visual function and prevent night blindness and vision loss. But dogs should pay attention to cooking chicken hearts and duck hearts to avoid being infected with parasites or bacteria. In addition, dogs should follow the principle of moderation when eating any food, because excessive intake of animal viscera may lead to vitamin A poisoning, obesity, calcium and phosphorus imbalance and other problems.