Diarrhea means frequent bowel movement. Diarrhea can be watery, bloody, mucous containing, soft stools etc. Diarrhea in dogs can be due to
- Stress
- Anxiety
- Infection of GI tract due to bacteria, virus, fungus and parasites
- Food allergy
- Eating garbage
- Cancer
- Side effects of medicines
- Lymphoma
- Sign of many other diseases