African Bush Viper 
Alburzi viper 
Amazonian Toad-headed Pitviper 
Arabian horned viper 
Arizona Black Rattlesnake 
Asp Viper 
Bamboo pit viper 
Bamboo viper 
Banded Rock Rattlesnake 
Bitis caudalis 
Bitis nasicornis 
Black-speckled palm-pit viper 
Blotched palm-pit viper 
Bornean Keeled Pit Viper 
Brazilian lancehead 
Brown-spotted pit viper 
Caatinga lancehead 
Cameron Highlands Pit Viper 
Cardamom Mountains Green Pitviper 
Central American bushmaster 
Central American jumping pitviper 
Chinese Green Tree Viper 
Coffee Palm Viper 
Colorado Desert Sidewinder