viperid
viperine
viper
hornsman
fer-de-lance
Bothrops atrops
sand viper
viperess
adder
horned snake
viperling
asp
Gaboon
genus Aspis
genus Cerastes
Aspis
carpet viper
river jack
hagworm
boid
genus Heterodon
Heterodon
western diamondback rattlesnake
venomoid
family Crotalidae
eel-blenny
Crotalidae
gaboon viper
Bitis gabonica
bolyeriid
chicken snake
balaenid
grass snake
horned viper
garter snake
ringneck snake
ring snake
Agkistrodon contortrix
copperhead
ring-necked snake
bothropoid
butterfly adder
Notechis
Gaboon adder
genus Notechis
death adder
Mexican west coast rattlesnake
atractaspidid
forest puff adder
Acanthophis antarcticus