There are 155 reptiles that start with the letter B, from Baboon Skink to Burmese Python. Below you will find them listed alphabetically along with some general information about each. Click the toggle view buttons in the top right corner to switch between the card and the table view.
For each item you will find the following information
Order: The subclass the reptiles belongs to
Habitat: The places or type of weather the reptiles lives in
Scientific name: The designation that scientists use to catalog the species
Name: Baboon Skink
Order: Squamata
Habitat: Sub-Saharan Africa
Scientific name: Trachylepis boehmei
Name: Bahamian Boa
Order: Squamata
Habitat: Bahamas
Scientific name: Chilabothrus striatus
Name: Bahia Coral Snake
Order: Serpentes
Habitat: Atlantic Coastal Forest of Brazil
Scientific name: Micrurus ibiboboca
Name: Baird's Rat Snake
Order: Squamata
Habitat: Central America
Scientific name: Elaphe bairdi
Name: Baja Beaded Lizard
Order: Squamata
Habitat: Baja California Peninsula
Scientific name: Heloderma horridum
Name: Baja California Chuckwalla
Order: Squamata
Habitat: Baja California
Scientific name: Sauromalus varius
Name: Bakasaurus
Order: Squamata
Habitat: Indonesia
Scientific name: Bakasaurus conandoylei
Name: Balearic Green Toad
Order: Anura
Habitat: Balearic Islands
Scientific name: Bufotes balearicus
Name: Balkan Crested Newt
Order: Urodela
Habitat: Southeastern Europe
Scientific name: Triturus ivanbureschi
Name: Balsas Spiny-Tailed Iguana
Order: Squamata
Habitat: Endemic to the Balsas River basin in Mexico
Scientific name: Ctenosaura balsasi
Name: Banded Calotes
Order: Squamata
Habitat: Tropical forests of Sri Lanka
Scientific name: Calotes nigrilabris
Name: Banded Dwarf Gecko
Order: Squamata
Habitat: Caribbean
Scientific name: Sphaerodactylus sputator
Name: Banded Garter Snake
Order: Serpentes
Habitat: North America
Scientific name: Thamnophis sirtalis
Name: Banded Gecko
Order: Squamata
Habitat: Deserts and dry areas in North America
Scientific name: Coleonyx variegatus
Name: Banded Hog-Nosed Snake
Order: Squamata
Habitat: North America
Scientific name: Heterodon nasicus
Name: Banded Keelback
Order: Squamata
Habitat: Southeast Asia
Scientific name: Amphiesma stolatum
Name: Banded Krait
Order: Squamata
Habitat: South and Southeast Asia
Scientific name: Bungarus fasciatus
Name: Banded Mabuya
Order: Squamata
Habitat: Savanna and grasslands of Africa
Scientific name: Trachylepis striata
Name: Banded Raceman
Order: Squamata
Habitat: Dry forests and scrublands of North Africa
Scientific name: Coluber taeniatus
Name: Banded Rock Agama
Order: Squamata
Habitat: Middle East and Mediterranean
Scientific name: Stellagama stellio
Name: Banded Rock Snake
Order: Squamata
Habitat: North Africa
Scientific name: Gongylophis colubrinus
Name: Banded Sand Boa
Order: Squamata
Habitat: Central Asia and Middle East
Scientific name: Eryx jaculus
Name: Banded Skink
Order: Squamata
Habitat: North America
Scientific name: Plestiodon fasciatus
Name: Banded Tree Snake
Order: Squamata
Habitat: New Guinea
Scientific name: Chondropython viridis
Name: Banded Water Snake
Order: Squamata
Habitat: Southeastern United States
Scientific name: Nerodia fasciata
Name: Banded Worm Lizard
Order: Amphisbaenia
Habitat: Mexico
Scientific name: Bipes biporus
Name: Bandi Skink
Order: Squamata
Habitat: India
Scientific name: Barkudia antiseptica
Name: Bandy-Bandy
Order: Squamata
Habitat: Australia
Scientific name: Vermicella annulata
Name: Barbacan Snake
Order: Squamata
Habitat: Colombia
Scientific name: Tantilla barbaconae
Name: Barbour's Anole
Order: Squamata
Habitat: Coastal forests of Cuba
Scientific name: Anolis barbouri
Name: Barbour's Dwarf Gecko
Order: Squamata
Habitat: Coastal forests of Cuba
Scientific name: Sphaerodactylus barbouri
Name: Barbour's Map Turtle
Order: Testudines
Habitat: Freshwater rivers and streams
Scientific name: Graptemys barbouri
Name: Barbour's Night Lizard
Order: Squamata
Habitat: Deserts of southwestern US
Scientific name: Xantusia barbouri
Name: Barking Gecko
Order: Squamata
Habitat: Australia
Scientific name: Underwoodisaurus milii
Name: Barkudia Lizard
Order: Squamata
Habitat: Coastal forests of India
Scientific name: Barkudia insularis
Name: Barnum's Turtle
Order: Testudines
Habitat: Forests and wetlands of southeastern US
Scientific name: Terrapene bauri
Name: Barred Garter Snake
Order: Squamata
Habitat: Western North America
Scientific name: Thamnophis ordinoides
Name: Barred Keelback
Order: Serpentes
Habitat: East Asia
Scientific name: Rhabdophis tigrinus
Name: Barred Kukri Snake
Order: Squamata
Habitat: Southeast Asia
Scientific name: Oligodon octolineatus
Name: Barred Sand Snake
Order: Squamata
Habitat: Savannas and dry forests in Africa
Scientific name: Psammophis sibilans
Name: Barton's Garter Snake
Order: Serpentes
Habitat: Eastern North America
Scientific name: Thamnophis bartonii
Name: Basilisk
Order: Squamata
Habitat: Tropical forests and woodlands in Central America
Scientific name: Basiliscus basiliscus
Name: Basilisk Anole
Order: Squamata
Habitat: Tropical forests of Central America
Scientific name: Anolis biporcatus
Name: Basilisk Gecko
Order: Squamata
Habitat: Tropical forests
Scientific name: Correlophus ciliatus
Name: Basilisk Lizard
Order: Squamata
Habitat: Tropical forests in Central and South America
Scientific name: Basiliscus plumifrons
Name: Basilisk Spiny Lizard
Order: Squamata
Habitat: Mexico
Scientific name: Sceloporus samcolemani
Name: Basque Viper
Order: Squamata
Habitat: Southwestern Europe
Scientific name: Vipera seoanei
Name: Batagur Turtle
Order: Testudines
Habitat: Southeast Asia
Scientific name: Batagur baska
Name: Batangas Pit Viper
Order: Squamata
Habitat: Philippines
Scientific name: Trimeresurus flavomaculatus
Name: Battlesnake
Order: Serpentes
Habitat: Australia
Scientific name: Acantophis pyrrhus
Name: Baudin's Gecko
Order: Squamata
Habitat: Endemic to Western Australia
Scientific name: Oedura baudinii
Name: Bauer's Gecko
Order: Squamata
Habitat: Indonesia
Scientific name: Cyrtodactylus baueri
Name: Baupock Skink
Order: Squamata
Habitat: Indonesia
Scientific name: Sphenomorphus baupoki
Name: Bawean Island Snake
Order: Serpentes
Habitat: Indonesia
Scientific name: Calamaria javanica
Name: Bawean Monitor
Order: Squamata
Habitat: Indonesia
Scientific name: Varanus sp. nov.
Name: Beaded Lizard
Order: Squamata
Habitat: Mexico
Scientific name: Heloderma horridum
Name: Bearded Dragon
Order: Squamata
Habitat: Arid and semi-arid regions in Australia
Scientific name: Pogona vitticeps
Name: Bearded Lacerta
Order: Squamata
Habitat: Turkey
Scientific name: Anatololacerta danfordi
Name: Bearded Swamp Snake
Order: Squamata
Habitat: North America
Scientific name: Nerodia rhombifer
Name: Beddome's Coral Snake
Order: Squamata
Habitat: Forests of southern India
Scientific name: Calliophis beddomei
Name: Beddome's Keelback
Order: Squamata
Habitat: Freshwater wetlands
Scientific name: Amphiesma beddomeii
Name: Beddome's Pit Viper
Order: Squamata
Habitat: India
Scientific name: Trimeresurus beddomei
Name: Belcher's Sea Snake
Order: Squamata
Habitat: Indo-Pacific
Scientific name: Hydrophis belcheri
Name: Belize Anole
Order: Squamata
Habitat: Found in Belize and parts of Mexico
Scientific name: Norops lemurinus
Name: Bengal Monitor
Order: Squamata
Habitat: Grasslands and forests of South Asia
Scientific name: Varanus bengalensis
Name: Berbera Skink
Order: Squamata
Habitat: Arid regions of Horn of Africa
Scientific name: Trachylepis berberae
Name: Berbera Spiny-Tailed Lizard
Order: Squamata
Habitat: Somalia
Scientific name: Uromastyx benti
Name: Bergmann's Skink
Order: Squamata
Habitat: Japan
Scientific name: Plestiodon bergmanni
Name: Bernier's Dwarf Gecko
Order: Squamata
Habitat: Madagascar
Scientific name: Lygodactylus benbergeri
Name: Bevington's Garter Snake
Order: Serpentes
Habitat: North America
Scientific name: Thamnophis bevingtonii
Name: Bhutan Bent-Toed Gecko
Order: Squamata
Habitat: Forests of Bhutan
Scientific name: Cyrtodactylus tibetanus
Name: Biak Angle-Headed Lizard
Order: Squamata
Habitat: Indonesia
Scientific name: Hypsilurus biakensis
Name: Biak Monitor
Order: Squamata
Habitat: Indonesia
Scientific name: Varanus kordensis
Name: Bibron's Gecko
Order: Squamata
Habitat: Mediterranean
Scientific name: Hemidactylus turcicus
Name: Bicolored Caiman
Order: Crocodylia
Habitat: Wetlands of northern South America
Scientific name: Caiman crocodilus fuscus
Name: Bicolored Coral Snake
Order: Squamata
Habitat: Central America
Scientific name: Micrurus diastema
Name: Bicolored Rat Snake
Order: Squamata
Habitat: East Asia
Scientific name: Ptyas korros
Name: Bicornuate Chameleon
Order: Squamata
Habitat: Found in Central Africa
Scientific name: Trioceros bicornis
Name: Big-Headed Turtle
Order: Testudines
Habitat: Southeast Asia
Scientific name: Platysternon megacephalum
Name: Billings' Viper
Order: Serpentes
Habitat: Tanzania
Scientific name: Proatheris superciliaris
Name: Biolley's Anole
Order: Squamata
Habitat: Costa Rica
Scientific name: Anolis biolleyi
Name: Biotic Gecko
Order: Squamata
Habitat: India
Scientific name: Hemidactylus reticulatus
Name: Bismarck Ringed Python
Order: Squamata
Habitat: Papua New Guinea
Scientific name: Bothrochilus boa
Name: Bismarck Ringed Snake
Order: Squamata
Habitat: Rainforests
Scientific name: Calamaria bicolor
Name: Bistriped Dwarf Gecko
Order: Squamata
Habitat: Africa
Scientific name: Lygodactylus conraui
Name: Black Banded Skink
Order: Squamata
Habitat: India
Scientific name: Lygosoma nigrofasciolatum
Name: Black Beauty Snake
Order: Serpentes
Habitat: Southeast Asia
Scientific name: Liopeltis nigriventer
Name: Black Bush Viper
Order: Squamata
Habitat: Central Africa
Scientific name: Atheris superciliaris
Name: Black Dragon Snake
Order: Squamata
Habitat: Freshwater habitats of South Asia
Scientific name: Xenochrophis piscator
Name: Black Dwarf Gecko
Order: Squamata
Habitat: Eastern Africa
Scientific name: Lygodactylus picturatus
Name: Black Flying Snake
Order: Squamata
Habitat: Asia
Scientific name: Chrysopelea ornata
Name: Black Mamba
Order: Squamata
Habitat: Savannas and woodlands in Africa
Scientific name: Dendroaspis polylepis
Name: Black Racer
Order: Squamata
Habitat: North America
Scientific name: Coluber constrictor
Name: Black Rat Snake
Order: Squamata
Habitat: North America
Scientific name: Pantherophis obsoletus
Name: Black Rock Agama
Order: Squamata
Habitat: Sub-Saharan Africa
Scientific name: Agama calcarifera
Name: Black Sea Snake
Order: Squamata
Habitat: Indo-Pacific
Scientific name: Hydrophis cyanocinctus
Name: Black Spiny-tailed Iguana
Order: Squamata
Habitat: Tropical dry forests in Central America
Scientific name: Ctenosaura similis
Name: Black Swamp Snake
Order: Squamata
Habitat: Wetlands and swamps in North America
Scientific name: Seminatrix pygaea
Name: Black-Bellied Coral Snake
Order: Squamata
Habitat: Deserts of southwestern US
Scientific name: Micruroides euryxanthus
Name: Black-Boned Skink
Order: Squamata
Habitat: Forests of West and Central Africa
Scientific name: Riopa fernandi
Name: Black-Breasted Leaf Turtle
Order: Testudines
Habitat: Forests near streams
Scientific name: Geoemyda spengleri
Name: Black-Capped Dwarf Gecko
Order: Squamata
Habitat: Forests and savannas of Africa
Scientific name: Lygodactylus blackburni
Name: Black-Cheeked Lizard
Order: Squamata
Habitat: Forests of Sumatra and Borneo
Scientific name: Gonocephalus nigriplicatus
Name: Black-Headed Python
Order: Squamata
Habitat: Arid woodlands
Scientific name: Aspidites melanocephalus
Name: Black-Headed Snake
Order: Serpentes
Habitat: Southeast Asia
Scientific name: Sibynophis collaris
Name: Black-Knobbed Worm Lizard
Order: Amphisbaenia
Habitat: Mexico
Scientific name: Bipes canaliculatus
Name: Black-Necked Spitting Cobra
Order: Squamata
Habitat: Savannas and grasslands
Scientific name: Naja nigricollis
Name: Black-Tailed Racer
Order: Serpentes
Habitat: North America
Scientific name: Coluber constrictor
Name: Blackhead Python
Order: Squamata
Habitat: Tropical forests in Australia
Scientific name: Aspidites melanocephalus
Name: Blainville's Horned Lizard
Order: Squamata
Habitat: Western North America
Scientific name: Phrynosoma blainvillii
Name: Blanchard's Frog Snake
Order: Serpentes
Habitat: Philippines
Scientific name: Cyclocorus lineatus
Name: Blanding's Turtle
Order: Testudines
Habitat: Wetlands and marshes
Scientific name: Emydoidea blandingii
Name: Blanford's Jerboa Gecko
Order: Squamata
Habitat: India
Scientific name: Sphaerodactylus blanfordii
Name: Bleeding Toadhead Turtle
Order: Testudines
Habitat: Tropical rainforests
Scientific name: Peltocephalus dumerilianus
Name: Blind Worm Lizard
Order: Amphisbaenia
Habitat: Africa
Scientific name: Cynisca leucura
Name: Blotched Butterfly Lizard
Order: Squamata
Habitat: Tropical and subtropical forests in Southeast Asia
Scientific name: Leiolepis belliana
Name: Blue Coral Snake
Order: Serpentes
Habitat: Southeast Asia
Scientific name: Calliophis bivirgatus
Name: Blue Crested Newt
Order: Urodela
Habitat: Southeastern Europe
Scientific name: Triturus karelinii
Name: Blue-Tailed Skink
Order: Squamata
Habitat: Asia
Scientific name: Plestiodon elegans
Name: Blunt-Headed Vine Snake
Order: Squamata
Habitat: Africa
Scientific name: Thelotornis capensis
Name: Blunt-Nosed Leopard Lizard
Order: Squamata
Habitat: Western North America
Scientific name: Gambelia sila
Name: Blyth's Keelback
Order: Squamata
Habitat: Freshwater wetlands
Scientific name: Amphiesma blytheana
Name: Blyth's Leaf-Toed Gecko
Order: Squamata
Habitat: Found in Northeast India and Myanmar
Scientific name: Hemiphyllodactylus typus blyti
Name: Boa Constrictor
Order: Squamata
Habitat: Tropical forests in Central and South America
Scientific name: Boa constrictor
Name: Boelen's Python
Order: Squamata
Habitat: Indonesia
Scientific name: Simalia boeleni
Name: Bog Lemming Snake
Order: Squamata
Habitat: Wetlands and swamps
Scientific name: Limnophis bicolor
Name: Bog Turtle
Order: Testudines
Habitat: Wetlands and bogs in North America
Scientific name: Glyptemys muhlenbergii
Name: Bogert's Anole
Order: Squamata
Habitat: Bahamas
Scientific name: Anolis bogerti
Name: Boie's Rock Agama
Order: Squamata
Habitat: Central Asia
Scientific name: Laudakia boiei
Name: Boiga
Order: Squamata
Habitat: Tropical and subtropical forests in Asia
Scientific name: Boiga
Name: Bolivian Pointed-Headed Snake
Order: Squamata
Habitat: South America
Scientific name: Oxyrhopus fitzingeri
Name: Bone Snake
Order: Squamata
Habitat: Southwestern North America
Scientific name: Lichanura trivirgata
Name: Bonin Leaf-Nosed Snake
Order: Serpentes
Habitat: Japan
Scientific name: Lycodon boninensis
Name: Bornean Earless Monitor
Order: Squamata
Habitat: Tropical forests
Scientific name: Lanthanotus borneensis
Name: Bornean Striped Coral Snake
Order: Serpentes
Habitat: Borneo
Scientific name: Calliophis intestinalis
Name: Bornean Sunbeam Snake
Order: Serpentes
Habitat: Borneo
Scientific name: Xenopeltis borneensis
Name: Borneo Earless Monitor
Order: Squamata
Habitat: Borneo
Scientific name: Lanthanotus borneensis
Name: Borneo Short-Tailed Snake
Order: Squamata
Habitat: Borneo
Scientific name: Brachyorrhos albus
Name: Boulenger's Keelback
Order: Squamata
Habitat: Freshwater wetlands
Scientific name: Amphiesma boulengeri
Name: Boulenger's Water Snake
Order: Serpentes
Habitat: Asia
Scientific name: Xenochrophis boulengeri
Name: Bouvier's Dwarf Gecko
Order: Squamata
Habitat: Madagascar
Scientific name: Lygodactylus bouvieri
Name: Brahminy Blind Snake
Order: Squamata
Habitat: Asia
Scientific name: Indotyphlops braminus
Name: Branching Coral Snake
Order: Serpentes
Habitat: South America
Scientific name: Micrurus lemniscatus
Name: Broad-Banded Copperhead
Order: Serpentes
Habitat: North America
Scientific name: Agkistrodon laticinctus
Name: Broad-Banded Water Snake
Order: Serpentes
Habitat: North America
Scientific name: Nerodia fasciata
Name: Broad-Headed Skink
Order: Squamata
Habitat: Wooded areas
Scientific name: Plestiodon laticeps
Name: Broad-Headed Snake
Order: Squamata
Habitat: Coastal forests in Australia
Scientific name: Hoplocephalus bungaroides
Name: Broad-Snouted Caiman
Order: Crocodilia
Habitat: South America
Scientific name: Caiman latirostris
Name: Brock's Caiman Lizard
Order: Squamata
Habitat: Brazil
Scientific name: Dracaena brocki
Name: Bronze Anole
Order: Squamata
Habitat: Caribbean
Scientific name: Anolis aeneus
Name: Brown Basilisk
Order: Squamata
Habitat: Tropical forests
Scientific name: Basiliscus vittatus
Name: Brown House Snake
Order: Serpentes
Habitat: Africa
Scientific name: Lamprophis fuliginosus
Name: Brown Tree Snake
Order: Serpentes
Habitat: Pacific islands
Scientific name: Boiga irregularis
Name: Bull Shark
Order: Euselachii
Habitat: Worldwide
Scientific name: Carcharhinus leucas
Name: Burmese Python
Order: Squamata
Habitat: Tropical forests in Southeast Asia
Scientific name: Python bivittatus
| Name | Order | Habitat | Scientific name |
|---|---|---|---|
| Baboon Skink | Squamata | Sub-Saharan Africa | Trachylepis boehmei |
| Bahamian Boa | Squamata | Bahamas | Chilabothrus striatus |
| Bahia Coral Snake | Serpentes | Atlantic Coastal Forest of Brazil | Micrurus ibiboboca |
| Baird's Rat Snake | Squamata | Central America | Elaphe bairdi |
| Baja Beaded Lizard | Squamata | Baja California Peninsula | Heloderma horridum |
| Baja California Chuckwalla | Squamata | Baja California | Sauromalus varius |
| Bakasaurus | Squamata | Indonesia | Bakasaurus conandoylei |
| Balearic Green Toad | Anura | Balearic Islands | Bufotes balearicus |
| Balkan Crested Newt | Urodela | Southeastern Europe | Triturus ivanbureschi |
| Balsas Spiny-Tailed Iguana | Squamata | Endemic to the Balsas River basin in Mexico | Ctenosaura balsasi |
| Banded Calotes | Squamata | Tropical forests of Sri Lanka | Calotes nigrilabris |
| Banded Dwarf Gecko | Squamata | Caribbean | Sphaerodactylus sputator |
| Banded Garter Snake | Serpentes | North America | Thamnophis sirtalis |
| Banded Gecko | Squamata | Deserts and dry areas in North America | Coleonyx variegatus |
| Banded Hog-Nosed Snake | Squamata | North America | Heterodon nasicus |
| Banded Keelback | Squamata | Southeast Asia | Amphiesma stolatum |
| Banded Krait | Squamata | South and Southeast Asia | Bungarus fasciatus |
| Banded Mabuya | Squamata | Savanna and grasslands of Africa | Trachylepis striata |
| Banded Raceman | Squamata | Dry forests and scrublands of North Africa | Coluber taeniatus |
| Banded Rock Agama | Squamata | Middle East and Mediterranean | Stellagama stellio |
| Banded Rock Snake | Squamata | North Africa | Gongylophis colubrinus |
| Banded Sand Boa | Squamata | Central Asia and Middle East | Eryx jaculus |
| Banded Skink | Squamata | North America | Plestiodon fasciatus |
| Banded Tree Snake | Squamata | New Guinea | Chondropython viridis |
| Banded Water Snake | Squamata | Southeastern United States | Nerodia fasciata |
| Banded Worm Lizard | Amphisbaenia | Mexico | Bipes biporus |
| Bandi Skink | Squamata | India | Barkudia antiseptica |
| Bandy-Bandy | Squamata | Australia | Vermicella annulata |
| Barbacan Snake | Squamata | Colombia | Tantilla barbaconae |
| Barbour's Anole | Squamata | Coastal forests of Cuba | Anolis barbouri |
| Barbour's Dwarf Gecko | Squamata | Coastal forests of Cuba | Sphaerodactylus barbouri |
| Barbour's Map Turtle | Testudines | Freshwater rivers and streams | Graptemys barbouri |
| Barbour's Night Lizard | Squamata | Deserts of southwestern US | Xantusia barbouri |
| Barking Gecko | Squamata | Australia | Underwoodisaurus milii |
| Barkudia Lizard | Squamata | Coastal forests of India | Barkudia insularis |
| Barnum's Turtle | Testudines | Forests and wetlands of southeastern US | Terrapene bauri |
| Barred Garter Snake | Squamata | Western North America | Thamnophis ordinoides |
| Barred Keelback | Serpentes | East Asia | Rhabdophis tigrinus |
| Barred Kukri Snake | Squamata | Southeast Asia | Oligodon octolineatus |
| Barred Sand Snake | Squamata | Savannas and dry forests in Africa | Psammophis sibilans |
| Barton's Garter Snake | Serpentes | Eastern North America | Thamnophis bartonii |
| Basilisk | Squamata | Tropical forests and woodlands in Central America | Basiliscus basiliscus |
| Basilisk Anole | Squamata | Tropical forests of Central America | Anolis biporcatus |
| Basilisk Gecko | Squamata | Tropical forests | Correlophus ciliatus |
| Basilisk Lizard | Squamata | Tropical forests in Central and South America | Basiliscus plumifrons |
| Basilisk Spiny Lizard | Squamata | Mexico | Sceloporus samcolemani |
| Basque Viper | Squamata | Southwestern Europe | Vipera seoanei |
| Batagur Turtle | Testudines | Southeast Asia | Batagur baska |
| Batangas Pit Viper | Squamata | Philippines | Trimeresurus flavomaculatus |
| Battlesnake | Serpentes | Australia | Acantophis pyrrhus |
| Baudin's Gecko | Squamata | Endemic to Western Australia | Oedura baudinii |
| Bauer's Gecko | Squamata | Indonesia | Cyrtodactylus baueri |
| Baupock Skink | Squamata | Indonesia | Sphenomorphus baupoki |
| Bawean Island Snake | Serpentes | Indonesia | Calamaria javanica |
| Bawean Monitor | Squamata | Indonesia | Varanus sp. nov. |
| Beaded Lizard | Squamata | Mexico | Heloderma horridum |
| Bearded Dragon | Squamata | Arid and semi-arid regions in Australia | Pogona vitticeps |
| Bearded Lacerta | Squamata | Turkey | Anatololacerta danfordi |
| Bearded Swamp Snake | Squamata | North America | Nerodia rhombifer |
| Beddome's Coral Snake | Squamata | Forests of southern India | Calliophis beddomei |
| Beddome's Keelback | Squamata | Freshwater wetlands | Amphiesma beddomeii |
| Beddome's Pit Viper | Squamata | India | Trimeresurus beddomei |
| Belcher's Sea Snake | Squamata | Indo-Pacific | Hydrophis belcheri |
| Belize Anole | Squamata | Found in Belize and parts of Mexico | Norops lemurinus |
| Bengal Monitor | Squamata | Grasslands and forests of South Asia | Varanus bengalensis |
| Berbera Skink | Squamata | Arid regions of Horn of Africa | Trachylepis berberae |
| Berbera Spiny-Tailed Lizard | Squamata | Somalia | Uromastyx benti |
| Bergmann's Skink | Squamata | Japan | Plestiodon bergmanni |
| Bernier's Dwarf Gecko | Squamata | Madagascar | Lygodactylus benbergeri |
| Bevington's Garter Snake | Serpentes | North America | Thamnophis bevingtonii |
| Bhutan Bent-Toed Gecko | Squamata | Forests of Bhutan | Cyrtodactylus tibetanus |
| Biak Angle-Headed Lizard | Squamata | Indonesia | Hypsilurus biakensis |
| Biak Monitor | Squamata | Indonesia | Varanus kordensis |
| Bibron's Gecko | Squamata | Mediterranean | Hemidactylus turcicus |
| Bicolored Caiman | Crocodylia | Wetlands of northern South America | Caiman crocodilus fuscus |
| Bicolored Coral Snake | Squamata | Central America | Micrurus diastema |
| Bicolored Rat Snake | Squamata | East Asia | Ptyas korros |
| Bicornuate Chameleon | Squamata | Found in Central Africa | Trioceros bicornis |
| Big-Headed Turtle | Testudines | Southeast Asia | Platysternon megacephalum |
| Billings' Viper | Serpentes | Tanzania | Proatheris superciliaris |
| Biolley's Anole | Squamata | Costa Rica | Anolis biolleyi |
| Biotic Gecko | Squamata | India | Hemidactylus reticulatus |
| Bismarck Ringed Python | Squamata | Papua New Guinea | Bothrochilus boa |
| Bismarck Ringed Snake | Squamata | Rainforests | Calamaria bicolor |
| Bistriped Dwarf Gecko | Squamata | Africa | Lygodactylus conraui |
| Black Banded Skink | Squamata | India | Lygosoma nigrofasciolatum |
| Black Beauty Snake | Serpentes | Southeast Asia | Liopeltis nigriventer |
| Black Bush Viper | Squamata | Central Africa | Atheris superciliaris |
| Black Dragon Snake | Squamata | Freshwater habitats of South Asia | Xenochrophis piscator |
| Black Dwarf Gecko | Squamata | Eastern Africa | Lygodactylus picturatus |
| Black Flying Snake | Squamata | Asia | Chrysopelea ornata |
| Black Mamba | Squamata | Savannas and woodlands in Africa | Dendroaspis polylepis |
| Black Racer | Squamata | North America | Coluber constrictor |
| Black Rat Snake | Squamata | North America | Pantherophis obsoletus |
| Black Rock Agama | Squamata | Sub-Saharan Africa | Agama calcarifera |
| Black Sea Snake | Squamata | Indo-Pacific | Hydrophis cyanocinctus |
| Black Spiny-tailed Iguana | Squamata | Tropical dry forests in Central America | Ctenosaura similis |
| Black Swamp Snake | Squamata | Wetlands and swamps in North America | Seminatrix pygaea |
| Black-Bellied Coral Snake | Squamata | Deserts of southwestern US | Micruroides euryxanthus |
| Black-Boned Skink | Squamata | Forests of West and Central Africa | Riopa fernandi |
| Black-Breasted Leaf Turtle | Testudines | Forests near streams | Geoemyda spengleri |
| Black-Capped Dwarf Gecko | Squamata | Forests and savannas of Africa | Lygodactylus blackburni |
| Black-Cheeked Lizard | Squamata | Forests of Sumatra and Borneo | Gonocephalus nigriplicatus |
| Black-Headed Python | Squamata | Arid woodlands | Aspidites melanocephalus |
| Black-Headed Snake | Serpentes | Southeast Asia | Sibynophis collaris |
| Black-Knobbed Worm Lizard | Amphisbaenia | Mexico | Bipes canaliculatus |
| Black-Necked Spitting Cobra | Squamata | Savannas and grasslands | Naja nigricollis |
| Black-Tailed Racer | Serpentes | North America | Coluber constrictor |
| Blackhead Python | Squamata | Tropical forests in Australia | Aspidites melanocephalus |
| Blainville's Horned Lizard | Squamata | Western North America | Phrynosoma blainvillii |
| Blanchard's Frog Snake | Serpentes | Philippines | Cyclocorus lineatus |
| Blanding's Turtle | Testudines | Wetlands and marshes | Emydoidea blandingii |
| Blanford's Jerboa Gecko | Squamata | India | Sphaerodactylus blanfordii |
| Bleeding Toadhead Turtle | Testudines | Tropical rainforests | Peltocephalus dumerilianus |
| Blind Worm Lizard | Amphisbaenia | Africa | Cynisca leucura |
| Blotched Butterfly Lizard | Squamata | Tropical and subtropical forests in Southeast Asia | Leiolepis belliana |
| Blue Coral Snake | Serpentes | Southeast Asia | Calliophis bivirgatus |
| Blue Crested Newt | Urodela | Southeastern Europe | Triturus karelinii |
| Blue-Tailed Skink | Squamata | Asia | Plestiodon elegans |
| Blunt-Headed Vine Snake | Squamata | Africa | Thelotornis capensis |
| Blunt-Nosed Leopard Lizard | Squamata | Western North America | Gambelia sila |
| Blyth's Keelback | Squamata | Freshwater wetlands | Amphiesma blytheana |
| Blyth's Leaf-Toed Gecko | Squamata | Found in Northeast India and Myanmar | Hemiphyllodactylus typus blyti |
| Boa Constrictor | Squamata | Tropical forests in Central and South America | Boa constrictor |
| Boelen's Python | Squamata | Indonesia | Simalia boeleni |
| Bog Lemming Snake | Squamata | Wetlands and swamps | Limnophis bicolor |
| Bog Turtle | Testudines | Wetlands and bogs in North America | Glyptemys muhlenbergii |
| Bogert's Anole | Squamata | Bahamas | Anolis bogerti |
| Boie's Rock Agama | Squamata | Central Asia | Laudakia boiei |
| Boiga | Squamata | Tropical and subtropical forests in Asia | Boiga |
| Bolivian Pointed-Headed Snake | Squamata | South America | Oxyrhopus fitzingeri |
| Bone Snake | Squamata | Southwestern North America | Lichanura trivirgata |
| Bonin Leaf-Nosed Snake | Serpentes | Japan | Lycodon boninensis |
| Bornean Earless Monitor | Squamata | Tropical forests | Lanthanotus borneensis |
| Bornean Striped Coral Snake | Serpentes | Borneo | Calliophis intestinalis |
| Bornean Sunbeam Snake | Serpentes | Borneo | Xenopeltis borneensis |
| Borneo Earless Monitor | Squamata | Borneo | Lanthanotus borneensis |
| Borneo Short-Tailed Snake | Squamata | Borneo | Brachyorrhos albus |
| Boulenger's Keelback | Squamata | Freshwater wetlands | Amphiesma boulengeri |
| Boulenger's Water Snake | Serpentes | Asia | Xenochrophis boulengeri |
| Bouvier's Dwarf Gecko | Squamata | Madagascar | Lygodactylus bouvieri |
| Brahminy Blind Snake | Squamata | Asia | Indotyphlops braminus |
| Branching Coral Snake | Serpentes | South America | Micrurus lemniscatus |
| Broad-Banded Copperhead | Serpentes | North America | Agkistrodon laticinctus |
| Broad-Banded Water Snake | Serpentes | North America | Nerodia fasciata |
| Broad-Headed Skink | Squamata | Wooded areas | Plestiodon laticeps |
| Broad-Headed Snake | Squamata | Coastal forests in Australia | Hoplocephalus bungaroides |
| Broad-Snouted Caiman | Crocodilia | South America | Caiman latirostris |
| Brock's Caiman Lizard | Squamata | Brazil | Dracaena brocki |
| Bronze Anole | Squamata | Caribbean | Anolis aeneus |
| Brown Basilisk | Squamata | Tropical forests | Basiliscus vittatus |
| Brown House Snake | Serpentes | Africa | Lamprophis fuliginosus |
| Brown Tree Snake | Serpentes | Pacific islands | Boiga irregularis |
| Bull Shark | Euselachii | Worldwide | Carcharhinus leucas |
| Burmese Python | Squamata | Tropical forests in Southeast Asia | Python bivittatus |