If a baby’s stool contains blood, whether bright red or dark red, it is abnormal. Besides congenital abnormalities in the intestines, it could also indicate bleeding or inflammation. These conditions might be caused by bacterial enteritis. It is recommended to check promptly and treat according to the symptoms. Also, pay attention to maintaining the cleanliness of the anus and avoid infections. Additionally, the appropriate environmental temperature for newborns is relatively high, but should not be lower than 30°C to prevent the baby from catching a cold.