The colon probably detected the non food items like cardboard as foreign objects, causing intestinal inflammation which lead to mucus linings being expelled. It was probably colitis, inflammation of the colon &/or large intestine. Typical signs are urgency to go, loose stools, covered in mucus w/bright red blood @ the end.
Dogs can also eat odd things if they are in digestive distress, that's why some dogs eat grass & vomit. |