The Small Intestine — Where Nutrients Are Absorbed After leaving the stomach, food moves into the small intestine — the longest part of your dog’s digestive system and the key player in nutrient absorption. It’s where all the hard work from the mouth, esophagus, and stomach pays off. What Is the Small Intestine? The small intestine is a long, twisting tube divided into three parts: Duodenum: Where stomach contents mix with enzymes from the pancreas and bile from the liver. Jejunum: The main site of nutrient absorption. Ileum: Absorbs vitamin B12, bile salts, and whatever else wasn’t absorbed earlier. How Digestion Happens Here Enzymes from the pancreas break down proteins, fats, and carbohydrates into tiny molecules your dog’s body can absorb. Bile from the liver helps emulsify fats, making them easier to digest. The small intestine is lined with millions of tiny finger-like projections called villi and microvilli . These structures increase surface area dra...
Holistic Dog Nutrition and Wellness