If a dog still bleeds 15 days after breeding, it may be a uterine infection or other disease. It is best to go to the hospital for examination to avoid delaying the condition. Generally, it is normal for bleeding to continue about five days after breeding, but if the bleeding lasts for a long time and the blood is dark red, it means that it is abnormal. After the dog is bred, you need to pay more attention. You cannot take a bath or do strenuous exercise. You must also supplement nutrition and calcium, which is beneficial to the health of the dog.