Snake lungs vary significantly in size, with snakes having evolved one shorter and one very long lung in series.
Snake Lung Size: Key Facts
The primary lung of snakes can extend significantly throughout the body, rather than being a symmetrical pair of organs as in many other animals.
Here's a breakdown of snake lung sizes according to the referenced study:
| Snake Type | Lung Length (as % of body length) |
|---|---|
| Boas | Around 30% |
| Some Colubrids/Elapids | As much as 80% |
- Boas: The longer lung in boas typically occupies approximately 30% of their total body length.
- Colubrids and Elapids: In some colubrid and elapid snake species, this long lung can extend to an impressive 80% of their body length.
Why the Difference?
Snakes' long, single lung design is an evolutionary adaptation that allows for efficient respiration within their elongated bodies. Because snakes lack a diaphragm like mammals, their movement is heavily tied to their breathing. A long, narrow lung works better for this breathing system than the typical two-lung system of most other animals.
Practical Insights:
- Snakes do not have diaphragms.
- The single, long lung is better suited to snakes’ unique breathing style.
