The green mamba snake is a venomous species of the Elapidae family native to the forests of southeastern Africa. The smallest of the four mamba species, adult green mamba snakes reach an average of 6 to 7 feet in length.
According to Reptiles magazine, green mamba snakes live in trees and only descend to the ground when basking or seeking prey of birds or small mammals. When threatened, the green mamba elevates its body and flattens its neck into a defensive posture, often hissing or gaping. While it shares the same deadly venom as the black mamba, it is only about one-tenth as toxic.