Infants—especially those who are breastfed—can have a wide range of 'normal' when it comes to stool frequency and consistency. If your baby is active, gaining weight, and shows no signs of dehydration or discomfort, loose stools are often not a cause for concern. However, if you notice persistent mucus, blood, or if the baby fails to gain weight, consult your pediatrician to rule out issues like food protein sensitivities or infections.