The liver is mainly a detoxification organ, which is rich in protein and vitamin A, in addition, it also contains many toxic substances. Long-term consumption can easily lead to unbalanced nutrition, lead to excessive vitamin A, and affect the absorption of other substances, such as calcium and phosphorus. Toxic substances will increase the burden of dogs' liver and kidney, and liver protein is also easy to cause itching of dogs' skin. It is recommended not to eat it often, but to eat 1 or twice a week.