Protein losing enteropathy is a condition where the digestive system loses proteins, leading to low levels of protein in the body. This condition can be seen in dogs, cats, and humans. Synonyms for protein losing enteropathy include intestinal protein loss, protein-losing gastroenteropathy, and protein-losing enteritis. Each term refers to the same condition where the proteins keep leaking out of the intestine, leading to protein depletion and malnutrition. Symptoms of protein losing enteropathy include diarrhea, weight loss, poor appetite, and muscle wasting. Treatment involves identifying and addressing the underlying cause, supportive care, and nutritional intervention. Early diagnosis and treatment can prevent further complications and improve the prognosis of the condition.