The interactive dog atlas · Organs · Abdomen

Stomach ventriculus (gaster)

The stomach is a widened portion of the tube through which food passes. It lies mostly toward the left, in the front part of the abdomen. Its position changes depending on how full it is.

Educational material, not a diagnostic tool. Written by the Mantrailing România team from veterinary sources we read. Updated 14.11.2026.

Dog in left lateral view — exterior, muscles, skeleton and organs Vector study after the Ellenberger, Baum and Dittrich plates: a standing dog, head to the left, deep chest and digitigrade limbs. The four layers use the same contour: exterior with body regions, superficial muscles, skeleton and organs.
Stomach on the atlas drawing, "Organs" layer. Left lateral view, after the Ellenberger, Baum and Dittrich plates.

Where it is

On the left, immediately caudal to the diaphragm and the liver, with its long axis perpendicular to the spine.

Layer
Organs
System
Digestive system
Region
Abdomen

What it is and what it does

The dog's stomach is an organ of the left side, placed caudal to the liver, in the center of the cranial abdomen, with its long axis perpendicular to the vertebral column. The cardia lies slightly to the left of the median plane, at the level of thoracic vertebra 11; the pylorus slightly to the right. It has a cardia, fundus, body and pyloric part (antrum, canal, pylorus). Its shape and position change with filling.

Worth remembering

It holds food temporarily before it passes into the intestine.

Names

  • Latin term: ventriculus (gaster).
  • In Romanian: Stomacul (Romanian page).

In the atlas lessons

The organs: where they sit, from neck to pelvis (5 min).

Questions from the atlas

"Find it on the drawing" questions whose answer is this structure; in the atlas you will find them in the question bank and in the lessons.

Guides it appears in