| Number of right lung lobes | Description of right lung lobes | Number of left lung lobes | Description of left lung lobes |
---|---|---|---|---|
Human (1, 2) | 3 | – | 2 | – |
Dog (2, 3) | 4 | Cranial, middle, caudal, and accessory lobes | 2 or 3 | Apical, middle, and diaphragmatic lobes, left apical and middle lobes are partially fused, being separated only by an incomplete (cranial) fissure |
Cat (2, 4) | 4 | Cranial, middle, caudal and accessory lobes | 2 or 3 | Apical (cranial), middle (cardiac), and diaphragmatic (caudal) lobes (3 lobes theory) versus apical (cranial) and diaphragmatic (caudal) lobes (2 lobes theory) |
Bovine (5) | 4 | Cranial, middle, caudal and accessory lobes | 2 | Cranial and caudal lobes |
Horse (2, 6) | 1 | Cranial, middle, caudal and accessory lobular divisions are united to form 1 lobe | 1 | Cranial, middle, caudal and accessory lobular divisions are united to form 1 lobe |
Raccoon (2) | 4 | – | 3 | – |
Equine (7) | 3 | cranial, caudal and accessory lobes | 2 | Cranial and caudal lobes |
Mouse (2, 9, 10) | 4 | Cranial, middle, caudal, and accessory lobes | 1 | No division |
Rat (2, 10, 11) | 4 | Upper, middle, accessory and lower lobes | 1 | The upper and accessory lobes are lost. The middle and lower lobes are united to form one lobe |
Hamster (11) | 5 | cranial, middle, caudal, intermediate, accessory | 1 | Single lobe |