Agkistrodon contortrix
copperhead
Bothrops atrops
fer-de-lance
adder
western diamondback rattlesnake
pilot snake
leaf-nosed snake
death adder
western rat snake
Sonoran whipsnake
Masticophis bilineatus
bushmaster
black snake
red-bellied snake
Storeria occipitamaculata
asp
Carphophis amoenus
Aspis
garter snake
genus Aspis
thunder snake
grass snake
genus Cerastes
chicken snake
worm snake
night adder
cottonmouth
viperid
Agkistrodon piscivorus
cottonmouth moccasin
water moccasin
family Crotalidae
Crotalidae
Bitis gabonica
gaboon viper
Gaboon
sand viper
Vipera berus
genus Opheodrys
Opheodrys
Sonora semiannulata
ground snake
common viper
Elaphe guttata
river jack
Bitis arietans
horned snake
red rat snake
viperish