Pythons, anacondas, and other constrictor snakes kill through compressive asphyxia. Species from this area on exhibit include anacondas, piranhas, spiders, freshwater stingrays and caimans. Sloths have many predators, including the jaguars, ocelots, harpy eagles, margays, and anacondas. Known predators include jaguars, margays, harpy eagles, and anacondas. The zoo also contains a king cobra, pythons, anacondas, poison dart frogs, rattlesnakes, and more. In South America, feral dogs, jaguars, anacondas, and spectacled bears are threats to livestock. Anacondas have also been known to hunt sloths. Large anacondas may take an occasional young caiman of this species. The crocodiles eventually make their way to nearby Clear Lake, along with the anacondas. Anacondas or water boas are a group of large snakes of the genus "Eunectes". The three finalists were Tupis, Sucuris (Anacondas) and Araras (Macaws). However, several natural observations exist involving wild Anacondas that show broken bones in large prey. However, when no male anacondas are available to provide offspring, facultative parthenogenesis is possible. While encounters between people and anacondas may be dangerous, they do not regularly hunt humans. The zoo also has five green anacondas, contributed by Colombo Zoo.