Exocrine Pancreatic Insufficiency (EPI) is a condition that affects the pancreas’s ability to produce digestive enzymes, leading to poor digestion and nutrient absorption in pets. Common in dogs and occasionally seen in cats, EPI can result in weight loss, diarrhea, and malnutrition if left untreated. Early detection through thorough veterinary examination is crucial for managing EPI effectively. With proper diagnosis and treatment, including enzyme replacement therapy and dietary adjustments, pets with EPI can lead happy, healthy lives.