#speckled_rattlesnake__Crotalus_mitchellii  markings vary but usually harmonize with background; of sw Arizona and Baja California
  supertype:  rattlesnake  pit viper with horny segments at the end of the tail that rattle when shaken
  member of:  genus_Crotalus__Crotalus  large rattlesnakes; seldom bite unless startled or pursuing prey
     member of:  family_Crotalidae__Crotalidae  New World vipers: pit vipers
        member of:  suborder_Serpentes__Serpentes__Ophidia__suborder_Ophidia  snakes
           member of:  order_Squamata__Squamata  diapsid reptiles: snakes and lizards
              member of:  subclass_Lepidosauria__Lepidosauria  diapsid reptiles: lizards; snakes; tuataras
                 member of:  class_Reptilia__Reptilia  class of cold-blooded air-breathing vertebrates with completely ossified skeleton and a body usually covered with scales or horny plates; once the dominant land animals
                    member of:  subphylum_Vertebrata__Vertebrata__Craniata__subphylum_Craniata  fishes; amphibians; reptiles; birds; mammals
                       member of:  phylum_Chordata__Chordata  comprises true vertebrates and animals having a notochord
                          member of:  kingdom_Animalia__Animalia__animal_kingdom  taxonomic kingdom comprising all living or extinct animals

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