How Do Snakes Know When to Stop Squeezing Their Prey?

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Apparently, snakes can sense their prey's heartbeat and that's how they know when they have killed their prey, and then, they start eating it.

Not only that, but a study has shown that a boa constrictor, like a python or anaconda, don't kill their prey by asphyxiation or suffocating them, as we used to believe.

Rather, these boa constrictors actually kill their prey by squeezing out the blood from them. They apply great amounts of pressure at a rapid pace to their prey's heart and blood vessels to the point that their heart stops beating instantly.

So, if you were to be caught by a boa constrictor, the best thing to do is try to immediately get it off or remove it by force.