All Schleich figures are lovingly hand-painted with detailed modelling and allow children to learn as they play. Anacondas are among the longest and heaviest snakes in the world. One exceptionally large anaconda was verified by scientists to be 6.95 metres long and to weigh 97.5 kg. Anacondas aren?t venomous snakes, but constrictors. They wrap themselves tightly around their prey until it suffocates.