Yes, boa constrictors do have teeth. However, their teeth are not like the teeth of mammals. Instead, boa constrictors have numerous small, curved teeth that are designed to grip and hold onto their prey rather than to chew or tear it.
These teeth are part of a specialized feeding mechanism. When a boa constrictor catches its prey, it uses its sharp teeth to latch onto it, preventing escape. The constrictor then uses its muscular body to wrap around the prey and suffocate it. After that, the boa will swallow its meal whole, which is possible due to its highly flexible jaws that can stretch significantly to accommodate large prey.
Additionally, boa constrictors have a few rows of backward-facing teeth in their jaws, which aid in the swallowing process. This unique adaptation allows them to consume animals much larger than their head size.