blood → Puppypedia

Why Is There Blood in My Puppy's Stool? (Even If They're Acting Normal)

The presence of blood in a puppy’s stool can be alarming, even if the puppy is acting normally. However, it is important to understand that blood in the stool is not always a sign of a serious medical condition. There are a number of possible causes of blood in the stool, some of which are more serious than others.