Boa constrictors have figured out a way to inflate only parts of their lungs.
This is how pythons can devour enormous prey
Do constrictor snakes always bite their prey before squeezing and killing? Could they kill their prey without latching teeth first? - Quora
Snakes Breathe Differently From Humans: Here's How Boa Constrictors Swallow Huge Preys Without Suffocating
Biting Off More Than They Can Chew: How Snakes Swallow Large Prey – The Herpetological Society of Ireland
Do Constricting Snakes Really Kill Their Prey by Suffocation?
Why does a snake swallow its prey without chewing it when it has teeth? Isn't it difficult to digest and your stomach hurts? - Quora
Stock Art Drawing Of A Boa Constrictor
Biting Off More Than They Can Chew: How Snakes Swallow Large Prey – The Herpetological Society of Ireland
Boa San Diego Zoo Animals & Plants
Snakes move their ribs to breathe while constricting prey
How boas save themselves from suffocating when constricting and digesting dinner
How boa constrictors swallow stuff whole and don't suffocate - Futurity
Why We Were Totally Wrong About How Boa Constrictors Kill