Does a dog breathe with lungs?

Yes, dogs, like all mammals, breathe with lungs. They have a respiratory system that includes nostrils, airways, trachea, bronchi, and lungs. The process of breathing involves oxygen and carbon dioxide exchange in the lungs and is supported by a diaphragm and chest muscles. The oxygen-rich air is inhaled and the oxygen diffuses from the lungs into the bloodstream to be transported throughout the body.