What Happens When Swallowed Alive?

Even in the case of fish being swallowed alive, the high-acid/low-oxygen content of the stomach acid and chime present in the predator's digestive tract would likewise cause it to perish from suffocation fairly quickly.

What animals Can you swallow alive?

Traditional food

What happens when a snake eats something alive?

While snakes can eat something that's still alive and might give that a try if their food item were small, they would likely try to constrict and suffocate an animal as big as a man before swallowing. During constriction the snake asphyxiates its prey by tightening its coils every time the meal breathes.