Digestive System of the Dog

The digestive system absorbs and digests food and eliminates solid wastes from the body and includes the:

  • Mouth
  • Teeth
  • Salivary Glands
  • Esophagus and Stomach
  • Small Intestine
  • Large Instestine
  • Pancreas
  • Liver and Gall Bladder


Artist's illustration of dog's mouth and tongue.


Artist's illustration of dog's skull, focusing on the jaw and teeth.

Esophogus and Stomach

Artist's drawing of outside of stomach and esophugus.
Artist's drawing of the stomach with a line of dissection to illustrate the inside of the stomach.

Small Intestine

Large Intestine and Anus



The pictures in this section are reprinted with permission by the copyright owner, Hill’s Pet Nutrition, from the Atlas of Veterinary Clinical Anatomy. These illustrations should not be downloaded, printed or copied except for personal, non-commercial use.

Washington State University assumes no liability for injury to you or your pet incurred by following these descriptions or procedures.