Understand the first dirty diapers. Early poop is meconium: a black or dark-green, thick, sticky, tar-like substance. It’s made up of intestinal cells, lanugo (the downy hair some babies are born with ...
The normal poop of a healthy breastfed baby is brownish yellow or green, seedy, and sometimes slightly runny. However, in the first few days after delivery, the baby may pass thick, blackish stools.