asp
Bothrops atrops
fer-de-lance
Cerastes cornutus
cerastes
horned viper
horned asp
bushmaster
sand viper
western diamondback rattlesnake
carpet viper
river jack
adder
Russell's viper
viperid
Vipera berus
common viper
gaboon viper
Bitis gabonica
Nikolsky's viper
viperine
Gaboon
lebectin
Gaboon viper
viperish
viper
ticpolonga
hornsman
Aspis
genus Cerastes
spitting snake
genus Aspis
rinkhals
viperling
Hemachatus haemachatus
ringhals
viperess
copperhead
sarafotoxin
ammodytin
black snake
Agkistrodon contortrix
shore pit viper
viperous
taipan
Oxyuranus scutellatus
pilot snake
Bitis arietans
bothropoid
viperlike
puff adder
horned snake
elapid snake
elapid
cobra
leaf-nosed snake
bothrombin
venomoid
jararacussin
temple viper
jararacussu
convulxin
mamushi
cottonmouth
cottonmouth moccasin
nigroviriditoxin
water moccasin
three-step snake
falx
night adder
ancrod
mamba
Agkistrodon piscivorus
ringed snake
death adder
twig snake
Acanthophis antarcticus
grass snake
Natrix natrix
ring snake
habu
butterfly adder
family Crotalidae
Crotalidae
Boettger's two-headed snake
bothropic
Old World coral snake
aspic
surucucu
viperoid
Mexican west coast rattlesnake
coral snake
daboia