Baby poop comes in a variety of colors, and those colors can change depending on your baby's diet. Your newborn's very first poop, called meconium, is greenish-black and tarry. Breastfed poop is ...

A baby's digestive system starts to develop before you might even know you're pregnant. While their first bowel movement isn't until after they're born, babies do pee in the womb and build up waste ...