Food molecules ingested by the dog are generally too complex to allow them to be absorbed in the intestine or used by the cells. Digestion provides the dog with nutrients, simpler molecules that can be used by the cells.
To this end, the canine digestive tract is devoted entirely to breaking down food molecules (glucides, lipids and proteins) and absorbing nutrients. Anatomically speaking, it can be divided into three sections. The first section, where ingestion takes place, includes the tongue, teeth, salivary glands, pharynx and esophagus. The second, responsible for digestion, comprises the stomach, small and large intestines and their associated glands (the liver and pancreas). The third, dedicated to elimination, is made up of the lower end of the large intestine and the anal canal.
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