Viperidae
361 species.
- Acuminate bush viperAtheris acuminata
- AdderVipera berus
- AdderVipera nikolskii
- African Bush ViperAtheris squamigera
- African Hairy Bush ViperAtheris hispida
- African Saw-scaled ViperEchis ocellatus
- Agasthyamali large-scaled Pit ViperCraspedocephalus peltopelor
- Alashan pitviperGloydius cognatus
- Alay PitviperGloydius rickmersi
- Albany AdderBitis albanica
- Alburzi ViperVipera eriwanensis
- Alcatrazes lanceheadBothrops alcatraz
- Altai ViperVipera altaica
- Anatolian Meadow ViperVipera anatolica
- Andaman pitviperTrimeresurus andersonii
- Andean Forest-pitviperBothrops pulcher
- Andean LanceheadBothrocophias andianus
- Angolan adder; Bocage's Horned Adder (after FRANK & RAMUS 1995).Bitis heraldica
- Arabian Horned ViperCerastes gasperettii
- Arizona Black RattlesnakeCrotalus cerberus
- Aruba Island RattlesnakeCrotalus unicolor
- Arunachal pitviperTrimeresurus arunachalensis
- Ashy Pit ViperCraspedocephalus puniceus
- Asian sand viperEristicophis macmahoni
- Asp ViperVipera aspis
- Autlán Long-tailed RattlesnakeCrotalus lannomi
- Baja California RattlesnakeCrotalus enyo
- Bale Mountains adderBitis parviocula
- Banded Pit ViperTrimeresurus fasciatus
- Barbour's Montane Pit ViperMixcoatlus barbouri
- Barnett's LanceheadBothrops barnetti
- Basilisk RattlesnakeCrotalus basiliscus
- Beautiful pitviperTrimeresurus venustus
- Black-headed bushmasterLachesis melanocephala
- Black-speckled Palm Pit ViperBothriechis nigroviridis
- Black-tailed Horned PitviperMixcoatlus melanurus
- Black-tailed RattlesnakeCrotalus ornatus
- Blacktail RattlesnakeCrotalus molossus
- Blotched Palm-pitviperBothriechis supraciliaris
- Bolivian LanceheadBothrops sanctaecrucis
- Borkin's ViperEchis borkini
- Borneo Pit ViperCraspedocephalus borneensis
- Brazil's LanceheadBothrops brazili
- Brazil's LanceheadBothrops oligobalius
- Brazilian LanceheadBothrops moojeni
- Bristly Tree ViperAtheris hirsuta
- Broad-banded CopperheadAgkistrodon laticinctus
- Broad-banded Temple PitviperTropidolaemus laticinctus
- Broad-horned PitviperOphryacus sphenophrys
- Broadley’s bush viperAtheris broadleyi
- Brongersma's Pit ViperCraspedocephalus brongersmai
- Brown spotted pitviperProtobothrops mucrosquamatus
- Brown’s Montane Pit ViperMixcoatlus browni
- Burton’s carpet viperEchis coloratus
- Caatinga LanceheadBothrops erythromelas
- CacicaBothrops ayerbei
- Campbell's RattlesnakeCrotalus campbelli
- CantilAgkistrodon bilineatus
- Cantor's Pit ViperTrimeresurus cantori
- Cardamom Mountains Green PitviperTrimeresurus cardamomensis
- Cascabel Rattlesnake; Central American RattlesnakeCrotalus durissus
- Cat LanceheadBothrocophias colombianus
- Catalina Island RattlesnakeCrotalus catalinensis
- Caucasian pitviperGloydius caucasicus
- Caucasus ViperMontivipera raddei
- Caucasus ViperVipera kaznakovi
- Central American Jumping Pit ViperMetlapilcoatlus mexicanus
- Central American bushmasterLachesis stenophrys
- Central Asian pitviperGloydius intermedius
- Central Nicobar Pit ViperTrimeresurus mutabilis
- Cerrado LanceheadBothrops pauloensis
- Cerro Petlalcala Montane PitviperCerrophidion petlalcalensis
- Ceylon Pit ViperCraspedocephalus trigonocephalus
- Chinese MoccasinDeinagkistrodon acutus
- Chocoan BushmasterLachesis acrochorda
- Chocoan Forest Pit ViperBothrops punctatus
- Clouded Pit viperTrimeresurus nebularis
- Coastal ViperMontivipera xanthina
- Coffee Palm ViperBothriechis lateralis
- Common Bamboo ViperCraspedocephalus gramineus
- Common or Rhombic Night AdderCausus rhombeatus
- Costa Rica Montane PitviperCerrophidion sasai
- CotiaraBothrops cotiara
- CottonmouthAgkistrodon piscivorus
- Cross-banded Mountain RattlesnakeCrotalus transversus
- Dabie Mountains Pit ViperProtobothrops dabieshanensis
- Darevsky's ViperVipera darevskii
- David's pitviperTrimeresurus davidi
- Desert Horned ViperCerastes cerastes
- Desert LanceheadBothrops pictus
- Desert Mountain AdderBitis xeropaga
- Dhofar Carpet ViperEchis khosatzkii
- Dinnik's ViperVipera dinniki
- Dunn's Hognose ViperPorthidium dunni
- Dwarf Puff AdderBitis peringueyi
- Eastern Diamondback RattlesnakeCrotalus adamanteus
- Eastern Russel’s ViperDaboia siamensis
- Ecuadorian ToadheadBothrocophias campbelli
- Egyptian Saw-scaled ViperEchis pyramidum
- Elegant pitviperProtobothrops elegans
- Fea ViperAzemiops feae
- Fer-de-LanceBothrops atrox
- Field's Horned ViperPseudocerastes fieldi
- Florida CottonmouthAgkistrodon conanti
- Fonseca's LanceheadBothrops fonsecai
- Forest night adderCausus lichtensteinii
- Gaboon AdderBitis gabonica
- Glacier pit viperGloydius swild
- Gloyd’s MoccasinAgkistrodon howardgloydi
- Gobi pitviper)Gloydius stejnegeri
- Godman's Montane Pit ViperCerrophidion godmani
- Golden LanceheadBothrops insularis
- Great Lakes Bush ViperAtheris nitschei
- Greek Meadow ViperVipera graeca
- Green Black LanceheadBothrops chloromelas
- Green JararacaBothrops bilineatus
- Green Night AdderCausus resimus
- Green bush viperAtheris chlorechis
- Guatemala Palm Pit ViperBothriechis bicolor
- Guerreran Long-tailed RattlesnakeCrotalus ericsmithi
- Guifarro's Palm PitviperBothriechis guifarroi
- Gumprecht’s green pitviperTrimeresurus gumprechti
- Gunalen’s PitviperTrimeresurus gunaleni
- Guo’s green pit viperTrimeresurus guoi
- HabuProtobothrops flavoviridis
- Habu Pit ViperProtobothrops himalayanus
- Halys Pit ViperGloydius halys
- Hetfield’s Bush ViperAtheris hetfieldi
- Highland Eyelash-PitviperBothriechis schlegelii
- Himalayan PitviperGloydius himalayanus
- Hognose LanceheadBothrocophias hyoprora
- Hognosed Pit ViperPorthidium nasutum
- Hon Son Pit ViperTrimeresurus honsonensis
- Honduras Jumping Pit ViperMetlapilcoatlus indomitus
- Honduras Montane PitviperCerrophidion wilsoni
- Horned AdderBitis caudalis
- Horned Pit Viper (Fi-Si-Pan)Protobothrops cornutus
- Hornless AdderBitis inornata
- Horseshoe (pit-) viperCraspedocephalus strigatus
- Hughes' Saw-scaled ViperEchis hughesi
- Hump-nosed MoccasinHypnale hypnale
- Hutton’s pitviperTropidolaemus huttoni
- Indo-Malayan mountain pitviperOvophis convictus
- Indonesian Pit ViperTrimeresurus hageni
- Iranian spider viperPseudocerastes urarachnoides
- Isla Angel RattlesnakeCrotalus angelensis
- Island Pit ViperTrimeresurus labialis
- Jabre’s LanceheadBothrops jabrensis
- JararacaBothrops jararaca
- Jararaca PintadaBothrops neuwiedi
- JararacussuBothrops jararacussu
- Jerdon's PitviperProtobothrops jerdonii
- Jiuzhai pitviperGloydius lateralis
- Joger's Saw-scaled ViperEchis jogeri
- Jonathan's LanceheadBothrops jonathani
- Jumping Pit ViperMetlapilcoatlus nummifer
- Kanburi Pit ViperTrimeresurus kanburiensis
- Katanga Mountain Bush ViperAtheris katangensis
- Kaulback’s lance-headed pitviperProtobothrops kaulbacki
- Kenya Horned ViperBitis worthingtoni
- Kenya Montane ViperMontatheris hindii
- Kikuchi HabuTrimeresurus gracilis
- Kramer's Pit ViperTrimeresurus macrops
- Kui Buri PitviperTrimeresurus kuiburi
- Lancang Plateau ViperGloydius huangi
- Lansberg's Hognose ViperPorthidium lansbergii
- Large-headed Carpet ViperEchis megalocephalus
- Large-scaled Pit ViperCraspedocephalus macrolepis
- Lataste’s ViperVipera latastei
- Lebanon ViperMontivipera bornmuelleri
- Levantine ViperMacrovipera lebetinus
- Likiang pitviperGloydius monticola
- Limestone Eyelash PitviperTrimeresurus ciliaris
- Lojan LanceheadBothrocophias lojanus
- Lotiev’s viperVipera lotievi
- Lowland viperProatheris superciliaris
- Malabarian Pit ViperCraspedocephalus anamallensis
- Malabarian Pit ViperCraspedocephalus malabaricus
- Malayan Pit ViperCalloselasma rhodostoma
- Malcolm’s pitviperTrimeresurus malcolmi
- MamushiGloydius blomhoffii
- Manabi Hognose PitviperPorthidium arcosae
- Mangrove ViperTrimeresurus purpureomaculatus
- Mangshan pitviperProtobothrops mangshanensis
- Many-horned AdderBitis cornuta
- Mao-lan pitviperProtobothrops maolanensis
- Marajó LanceheadBothrops marajoensis
- Marbled lanceheadBothrops marmoratus
- March's Palm Pit ViperBothriechis marchi
- Martinique LanceheadBothrops lanceolatus
- MassasaugaSistrurus catenatus
- Matilda's Horned ViperAtheris matildae
- Mato Grosso LanceheadBothrops mattogrossensis
- Maya’s pit viperTrimeresurus mayaae
- Mayombe Bush-ViperAtheris anisolepis
- McGregor's pitviperTrimeresurus mcgregori
- Meadow ViperVipera ursinii
- Merendon Palm-pitviperBothriechis thalassinus
- Mexican Dusky RattlesnakeCrotalus armstrongi
- Mexican Lancehead RattlesnakeCrotalus polystictus
- Mexican MoccasinAgkistrodon russeolus
- Mexican MoccasinAgkistrodon taylori
- Mexican Pygmy RattlesnakeCrotalus ravus
- Mexican Smallhead RattlesnakeCrotalus intermedius
- Middle American RattlesnakeCrotalus simus
- Moela’s lanceheadBothrops germanoi
- Mongo Hairy Bush ViperAtheris mongoensis
- Moorish ViperDaboia mauritanica
- Motuo bamboo pitviperTrimeresurus medoensis
- Mount Bulgar ViperMontivipera bulgardaghica
- Mount Kinabalu Pit ViperGarthius chaseni
- Mount Liupan PitviperGloydius liupanensis
- Mount Mabu bush viperAtheris mabuensis
- Mountain AdderBitis atropos
- Mountain Pit ViperOvophis monticola
- Mountain ViperMontivipera albizona
- Mountain ViperVipera monticola
- Mt Kenya Bush ViperAtheris desaixi
- Mt Rungwe bush viperAtheris rungweensis
- Murici LanceheadBothrops muriciensis
- Namaqua Puff AdderBitis schneideri
- Nepal pitviperTrimeresurus septentrionalis
- North Philippine temple pitviperTropidolaemus subannulatus
- Northern Pacific RattlesnakeCrotalus oreganus
- Northwestern Neotropical RattlesnakeCrotalus culminatus
- Nujiang pit viperGloydius lipipengi
- Okinawa pitviperOvophis okinavensis
- Olmecan Pit ViperMetlapilcoatlus olmec
- Oman saw-scaled viperEchis omanensis
- Orlov's ViperVipera orlovi
- Ornamental tailed pit- viperTrimeresurus caudornatus
- Osborne's LanceheadBothrops osbornei
- Painted LanceheadBothrops diporus
- Palestine ViperDaboia palaestinae
- Pampas LanceheadBothrops pubescens
- Panamint RattlesnakeCrotalus stephensi
- Persian Horned ViperPseudocerastes persicus
- Peru Forest Pit Viper (peruviana)Bothrops oligolepis
- Philippine pitviperTrimeresurus flavomaculatus
- PhoorsaEchis carinatus
- Phuket PitviperTrimeresurus phuketensis
- Picado's Pit ViperAtropoides picadoi
- Piraja's LanceheadBothrops pirajai
- Pope’s Tree ViperTrimeresurus popeiorum
- Portugese ViperVipera seoanei
- Puff AdderBitis arietans
- Pygmy RattlesnakeSistrurus miliarius
- Quang Binh pitviperTrimeresurus truongsonensis
- Queretaran Dusky RattlesnakeCrotalus aquilus
- Rasmussen’s Night AdderCausus rasmusseni
- Razi’s ViperMacrovipera razii
- Red AdderBitis rubida
- Red RattlesnakeCrotalus ruber
- Redtail (bamboo) Pit ViperTrimeresurus erythrurus
- Rhinoceros AdderBitis rhinoceros
- Rhinoceros ViperBitis nasicornis
- Roman's Carpet ViperEchis romani
- Roman's Saw-scaled ViperEchis leucogaster
- Rowley's Palm Pit ViperBothriechis rowleyi
- Ruby-eyed Green PitviperTrimeresurus rubeus
- Russell’s ViperDaboia russelii
- Sabah Bamboo pitviperTrimeresurus sabahi
- Sahara Sand ViperCerastes vipera
- Saint Lucia ViperBothrops caribbaeus
- Salazar’s pit viperTrimeresurus salazar
- San Esteban Island RattlesnakeCrotalus estebanensis
- San Lorenzo Island RattlesnakeCrotalus lorenzoensis
- Sand ViperVipera ammodytes
- Sao Paulo LanceheadBothrops itapetiningae
- Schultze's Pit ViperTrimeresurus schultzei
- Sertao LanceheadBothrops lutzi
- Shedao island pitviperGloydius shedaoensis
- Short-tailed MamushiGloydius brevicaudus
- Siberut PitviperTrimeresurus whitteni
- Sichuan pitviperTrimeresurus sichuanensis
- SidewinderCrotalus cerastes
- Sievers’ Three horned-scaled pitviperProtobothrops sieversorum
- Sinaloan Long-tailed RattlesnakeCrotalus stejnegeri
- Slender Hognose ViperPorthidium ophryomegas
- Slender-horned PitviperOphryacus undulatus
- Small-eyed ToadheadBothrocophias microphthalmus
- Snouted Night AdderCausus defilippii
- South American BushmasterLachesis muta
- South Philippine temple pitviperTropidolaemus philippensis
- Southern AdderBitis armata
- Southern Bamboo Pit ViperCraspedocephalus occidentalis
- Southern CopperheadAgkistrodon contortrix
- Southern Pacific RattlesnakeCrotalus helleri
- Southwestern Speckled RattlesnakeCrotalus pyrrhus
- Speckled Forest Pit ViperBothrops taeniatus
- Speckled RattlesnakeCrotalus mitchellii
- Spotted Night AdderCausus maculatus
- Sri Lanka Humpnose ViperHypnale nepa
- Stejneger's Pit ViperTrimeresurus stejnegeri
- Steppe ViperVipera renardi
- Strauch’s pitviperGloydius strauchi
- Sumatra Pit ViperTrimeresurus sumatranus
- Sumatran Palm Pit ViperCraspedocephalus andalasensis
- Szechwan Pit ViperProtobothrops xiangchengensis
- Taiwan mountain pitviperOvophis makazayazaya
- Talamancan Palm-PitviperBothriechis nubestris
- Tancitaran Dusky RattlesnakeCrotalus pusillus
- Tancitaro RattlesnakeCrotalus tancitarensis
- Tehuantepec Isthmus Neotropical rattlesnakeCrotalus ehecatl
- Temple pitviperTropidolaemus wagleri
- TerciopeloBothrops asper
- Tibetan Pit ViperTrimeresurus tibetanus
- Tiger RattlesnakeCrotalus tigris
- Timber rattlesnakeCrotalus horridus
- Tlaloc's RattlesnakeCrotalus tlaloci
- Tokara HabuProtobothrops tokarensis
- Tongtianhe pit viperGloydius rubromaculatus
- Tonkin pitviperOvophis tonkinensis
- Totonacan RattlesnakeCrotalus totonacus
- Travancore Pit ViperCraspedocephalus travancoricus
- Trungkhanh PitviperProtobothrops trungkhanhensis
- Tsushima island pitviperGloydius tsushimaensis
- Twin-spotted RattlesnakeCrotalus pricei
- Two-lined Night AdderCausus bilineatus
- Tzotzil Montane Pit ViperCerrophidion tzotzilorum
- Uetz’ pit viperTrimeresurus uetzi
- Ujarran Hognose ViperPorthidium volcanicum
- Uracoan RattlesnakeCrotalus vegrandis
- UrutuBothrops alternatus
- Ussuri MamushiGloydius ussuriensis
- Uzungwe Mountain Bush ViperAtheris barbouri
- Variable Bush ViperAtheris subocularis
- Venezuela Forest Pit ViperBothrops medusa
- Venezuela LanceheadBothrops venezuelensis
- ViridisCrotalus viridis
- Vitória's LanceheadBothrops otavioi
- Vogel’s Pit ViperTrimeresurus vogeli
- Wagner's ViperMontivipera wagneri
- Western Diamond-backed RattlesnakeCrotalus atrox
- Western Dusky RattlesnakeCrotalus triseriatus
- Western Hognose ViperPorthidium hespere
- Western Jumping PitviperMetlapilcoatlus occiduus
- White-lipped island pitviperTrimeresurus insularis
- White-lipped pitviperTrimeresurus albolabris
- White-tailed Hognose ViperPorthidium porrasi
- Whitetail LanceheadBothrops leucurus
- Wirot’s Pit ViperCraspedocephalus wiroti
- YararanataBothrops ammodytoides
- Yellow-blotched Palm Pit ViperBothriechis aurifer
- Yucatan Neotropical RattlesnakeCrotalus tzabcan
- Yucatán Hognose ViperPorthidium yucatanicum
- Yunnan Bamboo pitviperTrimeresurus yunnanensis
- ZaraHypnale zara
- Zayuan mountain pitviperOvophis zayuensis
- Zoige pit viperGloydius angusticeps
- cheeked SnakeBothrocophias myersi
- horned bush viperAtheris ceratophora
- lepidusCrotalus lepidus
- scutulatusCrotalus scutulatus
- willardiCrotalus willardi
- Bothrocophias tulitoi
- Bothrops monsignifer
- Bothrops sonene
- Gloydius changdaoensis
- Gloydius qinlingensis
- Trimeresurus calamitas