Boa constrictors have figured out a way to inflate only parts of their lungs.
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Do constrictor snakes always bite their prey before squeezing and killing? Could they kill their prey without latching teeth first? - Quora
How boas save themselves from suffocating when constricting and digesting dinner
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Why boa constrictors don't suffocate when they squeeze their prey to death, Science
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How do boa constrictors avoid suffocating when they squeeze their prey?
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Do Constricting Snakes Really Kill Their Prey by Suffocation?
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How do boa constrictors not suffocate while eating?
Can snakes choke on their prey? - Quora