Exocrine pancreatic insufficiency (EPI) is a condition where the pancreas fails to produce digestive enzymes, causing severe malnutrition despite normal appetite, with excellent welfare outcomes achievable through enzyme supplementation.
EPI creates a specific welfare suffering: the hunger of severe malnutrition in an animal that eats normally or ravenously. Dogs with EPI are consuming food but absorbing almost nothing from it — they lose weight progressively while apparently eating well, and owners often delay investigation thinking the dog simply needs more food. The hunger drive intensifies as malnutrition worsens, driving coprophagy and extreme food-seeking behaviour. By the time diagnosis is made, many dogs have lost so much weight that their ribs, spine, and hip bones are visible. The transformation from enzyme supplementation is dramatic and welfare-affirming: within 1-2 weeks of starting treatment, faeces normalise, weight begins to return, and food-seeking behaviour reduces. The welfare challenge long-term is compliance — enzyme powder must be added to every meal for life, and without it, disease recurs within days. Owner education about the absolute necessity of treatment consistency prevents the distress of repeated relapses.