A big constrictor is a type of large snake that wraps its body around its prey and squeezes it until it can no longer breathe. The most common types of big constrictors are the BOA, PYTHON, and ANACONDA. Boas are found in Central and South America, while pythons are found in Africa, Asia, and Australia. Anacondas are found in South America and are the largest of the three species. All three species are non-venomous and rely on their powerful muscles to subdue their prey.