Can Worms In Dogs Cause Blood In Stool?

Can Worms In Dogs Cause Blood In Stool? In addition to diarrhea, dogs with hookworms may have blood in their stools. Bloody diarrhea develops as the infection worsens and may cause chronic bloody diarrhea if left untreated. Blood loss is a serious risk for dogs infected with worms. Can an intestinal parasite cause bleeding? Conclusions: