Large-Intestinal Disorders in Dogs and Cats: Diagnosis, Management, and Clinical Outcomes.

Large intestinal diseases in dogs and cats predominantly present as large bowel diarrhea, with constipation occurring less frequently. Etiologies are diverse and include infectious agents, parasites, inflammatory disease, neoplasia, vascular malformations, and motility disorders. Diagnostic evaluation incorporates a thorough history, physical examination, fecal testing, diagnostic imaging, and, when indicated, colonoscopy with mucosal biopsy. Therapeutic strategies are directed toward the underlying cause, complemented by dietary modification and supportive care. Prognosis is contingent upon the specific etiology, disease severity, and timeliness of intervention.