#constrictor  any of various large nonvenomous snakes that kill their prey by crushing it in its coils
  supertype:  ophidian__snake__serpent  limbless scaly elongate reptile; some are venomous
  subtype:  boa  any of several chiefly tropical constrictors with vestigial hind limbs
     subtype:  boa_constrictor__boaconstrictor__Constrictor_constrictor  very large boa of tropical America and West Indies
     subtype:  rubber_boa__tow-headed_snake__Charina_bottae  boa of grasslands and woodlands of western North America; looks and feels like rubber with tail and head of similar shape
     subtype:  rosy_boa__Lichanura_trivirgata  boa of rocky desert of southwestern United States
     subtype:  anaconda__Eunectes_murinus  large arboreal boa of tropical South America
     subtype:  python  large Old World boas
        subtype:  carpet_snake__Python_variegatus__Morelia_spilotes_variegatus  Australian python with a variegated pattern on its back
        subtype:  reticulated_python__reticulatedpython__Python_reticulatus  of southeast Asia and East Indies; the largest snake in the world
        subtype:  Indian_python__Python_molurus  very large python of southeast Asia
        subtype:  rock_python__rock_snake__Python_sebae  very large python of tropical and southern Africa
        subtype:  amethystine_python__amethystinepython  with an amethyst color

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