A black bowel movement can be a sign of internal bleeding, according to WebMD. However, black stool can also result from taking iron supplements or a medication that contains bismuth subsalicylate. More »

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Causes of blood in a bowel movement include hemorrhoids, an anal fissure, an anal abscess, diverticulitis and inflammatory bowel disease, according to Cleveland Clinic. The color of the blood helps determine where the bl... More »

According to veterinarians, the color of a healthy puppy's bowl movement should be chocolate brown. Depending on the color of the dog food, however, the color may differ slightly. Red streaks in the feces may be from blo... More »

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Black stool in a bowel movement can be caused by bleeding in the upper part of the gastrointestinal tract, explains WebMD. The black stool gets its color from digested blood. More »

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The most common symptoms of an irritable bowel include stomach pain or cramps, a change in bowel habits such as diarrhea or constipation, bloating, and urgent need to have a bowel movement, according to the National Heal... More »

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Small amounts of mucus in bowel movements is normal, but large amounts can be a sign of a gastrointestinal issue, according to Healthline. Dehydration, constipation and colon inflammation can result in excess mucus.in st... More »

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The symptoms of irritable bowel syndrome, or IBS, include pain in the lower abdomen, excessive gas, bloating, changes in the pattern of bowel movement and mucus in the stool, according to WebMD. These symptoms must occur... More »

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