Boa constrictors have small, hooked teeth that they use to grab and hold prey. If their teeth fall out or become damaged, they can regrow them.

Why do snakes have fangs?

Predators use fangs to hold and quickly kill their prey. Venomous snakes use their fangs in a unique way: to inject venom into their prey. Venom immobilizes — and sometimes kills — snakes' prey. ... Many venomous snakes have long, hollow fangs through which venom can be injected directly into prey.

What happens if a snake breaks its fang?

When a snake loses or breaks a fang it will grow another. Since the poison will work almost immediately, some snakes will hold onto the animal, which is unlucky enough to be in its mouth, until it stops struggling and the snake can start to swallow it.