How do boa constrictors use their fangs?

Boa constrictors don't have fangs. They have teeth. Teeth. Fangs. The second one is the skull of a Gaboon viper, and they clearly have fangs. Fangs, in snakes, are used for venom delivery. So snakes that aren't venomous simply don't have them. read more

If you're asking what a boa constrictor uses its teeth for, it's for capturing and holding on to prey while they constrict it, and then for pulling the prey into its mouth to eat it. read more

Boa constrictors sometimes have spots across their bodies. 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. Boa constrictors do not have fangs, but their jaws can stretch incredibly wide, allowing them to swallow large prey, according to National Geographic. read more

Boa Constrictors have teeth that are comparatively small to their body size, because they mostly use them for gripping their prey before ingestion. Anywhere from a few millimetres to a centimetre would be a good estimate, depending on size. read more