Snakes activate different sections of the rib cage, using far end of lungs as a bellows.
Boa constrictors stop their victims' hearts
How Boa Constrictors Can Breathe Even as They Crush Their Prey
Scientists reveal how boa constrictors breathe while squeezing the life out of their prey
Python San Diego Zoo Animals & Plants
Boas Breathe & Squeeze and Binary Stars with Planets
How Do Snakes Know When To Stop Constricting? — Steemit
Boa constrictors' lethal secret revealed - BBC News
Boa constrictor's rib trick will take your breath away
How Tight Can a Python Squeeze? - Snakes for Pets
Discover the Largest Boa Constrictor Ever Caught - A-Z Animals
How do snakes like boa constrictors breathe with a mouthful of food? Scientists have the answer - ABC News
Boa Constrictor Facts for Kids
How do constrictor boas prevent suffocation when they squeeze their prey? - Infobae