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