jararacussu
bothropic
jararaca
jararacussin
bothrombin
lancehead
bothropoid
river jack
fer-de-lance
Bothrops atrops
temple viper
horned viper
cerastes
nigroviriditoxin
sand viper
horned asp
asp
Cerastes cornutus
bothropasin
copperhead
western diamondback rattlesnake
Boettger's two-headed snake
pentabothropic
shore pit viper
viperine
bushmaster
black snake
Gaboon viper
Nikolsky's viper
ticpolonga
water moccasin
Russell's viper
galatrox
lowlands hump-nosed pit viper
rhodocytin
tsingala
red-shouldered hawk
jararhagin
carpet viper
scolopendrism
Helodermatidae
ammodytoxin
cottonmouth
Galápagos hawk
Pseudechis
cottonmouth moccasin
genus Pseudechis
family Helodermatidae
Agkistrodon piscivorus
twig snake