The digestive response of Burmese Pythons to such large prey has made them a model species for digestive physiology. A fasting python will have a reduced stomach volume and acidity, reduced intestinal mass and a 'normal' heart volume. After ingesting prey, the entire digestive system undergoes a massive remodelling, with rapid hypertrophy of the intestines, production of stomach acid, and a 40% increase in mass of the ventricles of the heart in order to fuel the digestive process.