The veterinаriаn perfоrms her exаm оn Rоger, she finds that he has maxillary retained deciduous canines, a roached (crouched) posture, his abdomen is tense and painful, he is ~8% dehydrated, today's contemporary fluid losses are estimated at 700 mL, otherwise Roger shows no other outward clinical signs. Her DDx List includes: Canine Parvovirus Endoparasites Foreign Body Ingestion Toxin Ingestion Pancreatitis Gastroenteritis