LEFT
left lung has a cardiac notch.
The left lung is slightly smaller than the right lung because 2/3 of the heart is located there. The left lung contains the cardiac notch, an indentation in the lung that surrounds the apex (pointed end) of the heart. The smaller left lung only has 2 lobes, the superior and inferior.
so that we can differentiate the right lung and left lung. the lung with the cardiac notch is the left lung as the heart is on the left side of the body.
Only the left lung has these features.
The right lung contains 4 lobes while the left lung contains 3
Pigs have 4 lobes in their right lung and 3 lobes in their left lung. The 3 lobes of the left lung are apical, cardiac, and diaphragmatic lobes.
to accommodate the heart
right lung has 3 lobes (superior, inferior & middle) while the left lung has 2 lobes (superior & inferior)
The right lung contains three lobes. The left lobe only has two. Because of the heart on the left side, the left lung only has two lobes to make more room for the heart to pump on that side.
The right lung has three lobes.
A cat has 7 lobes of the lung. The right side has 3; the right apical, right cardiac, and right diaphragmatic. The left also has 3; the left apical, left cardiac, and left diaphragmatic. There is one lobe directly in between both sides called the intermediate lobe.
There are four lobes that are present in the lungs of a pig. The larger, right lung is divided into four lobes; the apical, cardiac, diaphragmatic, and the fourth samller lobe below the apex of the heart, the intermediate.