What to Do If a Puppy Has Mucousy Diarrhea?
If your puppy has mucus in its stool, it can be a sign of irritation of its stomach and large intestine. Mucousy diarrhea can be caused by factors such as sudden changes in diet, eating something unusual like spoiled or rotten food, food allergies or infection by intestinal parasites such as giardia and coccidia. These parasites cause colitis in your puppy and cause it to become sick very quickly upon becoming infected.
