We can detect some diseases early by observing the color of the baby’s stool. If a child has a biliary obstruction, the stool is grayish or clay-colored. If there is bleeding in the upper part of the gastrointestinal tract or if iron supplements are taken, black stools, some of which look like tar, may be passed. If there is bright red blood in the stool, it may be caused by rectal polyps, colon polyps and anal fissures, and further examination should be done. Dark red jam-like stools are seen in intussusception. Dark red jam-like purulent stools are seen in amebic dysentery. A flesh-water-like bloody stool with a peculiar fishy odor is seen in acute hemorrhagic necrotizing enterocolitis. If the stool has pus and blood and a fishy odor, dysentery may be considered. If the stool is shiny and creamy in appearance, it indicates fatty indigestion. If your baby has any of these stools, you need to see a doctor promptly.