A Comprehensive List of scientifically measured Snake Toxicity

LD50 of venomous snakes

This list contains comprehensive information about the toxicity of venomous snakes. LD50 is the lethal dose, that kills 50% of the animals in laboratory testing. All LD50-values in this list are from laboratory testing with mice. Snake venom is very specific, you can NOT extrapolated use the LD50 from mice to predict the effect on human beings. The list allows you to find the 10 most venomous snakes of the planet by your own criteria. It is presorted by intravenous LD50, but you can sort it to your own criteria by clicking on any column headline. This list is updated regularly and it's our aim to provide the most comprehensive data collection of this kind in the internet. Even though, you will realize there are a lot of white spots in the table. If you have data, please contact us.

LD50 of venomous snakes tested with Mice

# Scientific Name
Common Name
TBL
(cm)
Fang
(mm)
Yield
(mg)
IV
(mg/kg)
kill
(mice)
SC
(mg/kg)
kill
(mice)
IP
(mg/kg)
kill
(mice)
IM
(mg/kg)
kill
(mice)
1. Ahaetulla nasuta
Long nosed whip snake
200
ref
25
ref
2. Boiga irregularis
Brown tree snake
310
ref
25
ref
0.08
ref
15,625 10.33
ref
121
3. Boiga cyanea
Green Cat Snake
192
ref
13.16
ref
4. Boiga dendrophila
Mangrove snake
250
ref
12.5
ref
4.85
ref
129 3.3
ref
189
5. Dispholidus typus
Boomslang
200
ref
5.20
ref
8
ref
0.067
ref
5,970 12.5
ref
32 1.3
ref
308
6. Salvadora grahamiae
Mountain Patchnose Snake
65
ref
0.6
ref
7. Spalerosophis diadema
Diadem Snake
200
ref
2.75
ref
8. Tantilla nigriceps
Plains Blackhead Snake
42
ref
0.1
ref
9. Thelotornis capensis
Southern twig snake
160
ref
0.5
ref
10. Thelotornis kirtlandii
Northern twig snake
170
ref
0.25
ref
11. Toxicodryas blandingii
Blandings Tree Snake
274
ref
2.9
ref
12. Trimorphodon lambda
Sonoran Lyre Snake
92
ref
7.7
ref
13. Atractaspis bibronii
Bibron's burrowing asp
70
ref
4.3
ref
0.06
ref
3,583
14. Atractaspis dahomeyensis
Dahomey burrowing asp
56
ref
3.4
ref
2.24
ref
76
15. Atractaspis engaddensis
Palestinian Mole Viper
100
ref
4
ref
9.6
ref
0.06
ref
8,000
16. Atractaspis microlepidota
Small scaled burrowing asp
110
ref
10
ref
0.06
ref
8,333
17. Malpolon monspessulanus
Montpellier Snake
200
ref
3.80
ref
6.5
ref
18. Acanthophis antarcticus
Common Death Adder
100
ref
8.30
ref
236
ref
0.338
ref
34,911 0.16
ref
73,750 0.08
ref
147,500
19. Aipysurus laevis
Olive brown sea snake
230
ref
5
ref
150
ref
0.15
ref
50,000 0.069
ref
108,696 0.09
ref
83,333
20. Aipysurus duboisii
Dubois' sea snake
148
ref
1.80
ref
1.7
ref
0.032
ref
2,656
21. Austrelaps superbus
Lowland copperhead
175
ref
4.50
ref
155
ref
0.5
ref
15,500 0.28
ref
27,679
22. Cryptophis nigrescens
Small eyed snake
120
ref
2.67
ref
23. Demansia olivacea
Olive whip snake
110
ref
14.2
ref
24. Emydocephalus annulatus
Annulated Turtle headed Sea Snake
105
ref
0.15
ref
1.2
ref
25
ref
2
25. Furina tristis
Brown headed snake
100
ref
3.61
ref
26. Hoplocephalus stephensii
Stephen's Banded Snake
100
ref
154
ref
1.36
ref
5,662
27. Hydrophis melanocephalus
Black headed Slender necked Sea Snake
161
ref
0.111
ref
28. Hydrophis curtus
Short Sea Snake
150
ref
3.30
ref
15
ref
29. Hydrophis gracilis
Slender sea snake
122
ref
0.13
ref
0.48
ref
30. Hydrophis elegans
Elegant sea snake
250
ref
3.90
ref
24
ref
0.12
ref
10,000 0.262
ref
4,580 0.12
ref
10,000
31. Hydrophis jerdonii
Cone nosed Sea Snake
117
ref
0.53
ref
32. Hydrophis klossi
Selangor Sea Snake
142
ref
0.2
ref
33. Hydrophis peronii
Horned Sea Snake
140
ref
1
ref
0.062
ref
806
34. Hydrophis belcheri
Belcher's sea snake
122
ref
0.07
ref
35. Hydrophis stricticollis
Bengal Sea Snake
125
ref
0.108
ref
0.164
ref
36. Hydrophis major
Olive headed sea snake
156
ref
3.80
ref
0.143
ref
0.194
ref
37. Hydrophis stokesii
Large headed Sea Snake
200
ref
7
ref
150
ref
0.164
ref
45,732 0.26
ref
28,846 0.25
ref
30,000
38. Hydrophis melanosoma
Black banded Robust Sea Snake
155
ref
0.4
ref
39. Hydrophis hardwickii
Spine bellied sea snake
100
ref
0.303
ref
0.541
ref
0.408
ref
0.24
ref
40. Hydrophis cyanocinctus
Annulated sea snake
275
ref
80
ref
0.275
ref
14,545 0.465
ref
8,602 0.2
ref
20,000
41. Hydrophis spiralis
Narrow banded Sea Snake
275
ref
0.25
ref
42. Hydrophis nigrocinctus
Black banded sea snake
108
ref
0.256
ref
0.344
ref
43. Hydrophis platurus
Yellowbelly sea snake
133
ref
1.50
ref
4.4
ref
0.09
ref
2,444 0.055
ref
4,000
44. Hydrophis ornatus
Ornate reef sea snake
130
ref
0.09
ref
45. Hydrophis viperinus
Viperine sea snake
100
ref
0.35
ref
46. Hydrophis schistosus
Beaked sea snake
158
ref
4
ref
80
ref
0.164
ref
24,390
47. Notechis scutatus
Mainland tiger snake
290
ref
5.50
ref
636
ref
0.01
ref
3,180,000 0.099
ref
321,212 0.05
ref
636,000
48. Oxyuranus microlepidotus
Inland taipan
250
ref
6.20
ref
217
ref
0.01
ref
1,085,000 0.0225
ref
482,222
49. Oxyuranus scutellatus
Coastal taipan
366
ref
12.10
ref
882
ref
0.155
ref
284,516 0.05
ref
882,000 0.009
ref
4,900,000
50. Oxyuranus temporalis
Central Ranges taipan
166
ref
3
ref
0.075
ref
51. Pseudechis australis
Mulga snake
330
ref
6.50
ref
1500
ref
0.23
ref
326,087 1.91
ref
39,267 0.52
ref
144,231
52. Pseudechis butleri
Butler's black snake
160
ref
64
ref
53. Pseudechis colletti
Collett's black snake
240
ref
226
ref
2.38
ref
4,748 1.2
ref
9,417
54. Pseudechis guttatus
Blue bellied black snake
200
ref
3.50
ref
213
ref
1.53
ref
6,961 0.84
ref
12,679
55. Pseudechis papuanus
Papuan black snake
245
ref
1.09
ref
56. Pseudechis porphyriacus
Red bellied black snake
250
ref
5
ref
298
ref
2.52
ref
5,913 0.7
ref
21,286
57. Pseudonaja affinis
Dugite
213
ref
143
ref
0.56
ref
12,768
58. Pseudonaja guttata
Speckled brown snake
147
ref
6
ref
59. Pseudonaja inframacula
Peninsula brown snake
170
ref
76.21
ref
0.25
ref
15,242
60. Pseudonaja nuchalis
Western brown snake
180
ref
74
ref
0.338
ref
10,947
61. Pseudonaja textilis
Eastern brown snake
240
ref
4
ref
155
ref
0.001
ref
7,750,000 0.041
ref
189,024 0.31
ref
25,000
62. Tropidechis carinatus
Clarence river snake
100
ref
5
ref
84
ref
0.58
ref
7,241 0.125
ref
33,600
63. Aspidelaps lubricus
Cape coral snake
80
ref
13.75
ref
64. Aspidelaps scutatus
Shield nose snake
75
ref
0.722
ref
65. Bungarus fasciatus
Banded krait
225
ref
114
ref
0.17
ref
33,529 3.58
ref
1,592 0.15
ref
38,000
66. Bungarus caeruleus
Indian krait
180
ref
3
ref
30
ref
0.04
ref
37,500 0.45
ref
3,333 0.008
ref
187,500
67. Bungarus candidus
Blue krait
155
ref
67.7
ref
0.04
ref
84,625
68. Bungarus flaviceps
Red headed krait
196
ref
50
ref
0.32
ref
7,813
69. Bungarus multicinctus
Many banded krait
180
ref
18.4
ref
0.071
ref
12,958 0.16
ref
5,750 0.019
ref
48,421 0.16
ref
5,750
70. Dendroaspis viridis
Western green mamba
250
ref
6.70
ref
100
ref
0.667
ref
7,496 0.79
ref
6,329 0.33
ref
15,152
71. Dendroaspis angusticeps
Eastern green mamba
250
ref
7.70
ref
60
ref
0.381
ref
7,874 3.32
ref
904 2.8
ref
1,071
72. Dendroaspis jamesoni
Jameson's mamba
255
ref
8
ref
120
ref
0.84
ref
7,143 1.02
ref
5,882 0.26
ref
23,077
73. Dendroaspis polylepis
Black mamba
430
ref
7.90
ref
400
ref
0.264
ref
75,758 0.055
ref
363,636 0.256
ref
78,125
74. Elapsoidea sundevallii
Sundevall's African garter snake
140
ref
0.722
ref
75. Hemachatus haemachatus
Rinkhals
150
ref
120
ref
1.15
ref
5,217 1
ref
6,000 1.6
ref
3,750
76. Laticauda colubrina
Common Yellow lipped Sea Krait
170
ref
0.45
ref
0.12
ref
77. Laticauda laticaudata
Blue lipped sea krait
136
ref
0.16
ref
0.179
ref
0.17
ref
78. Laticauda semifasciata
Black banded sea krait
200
ref
14
ref
0.211
ref
3,318 0.2
ref
3,500 0.5
ref
1,400
79. Micrurus obscurus
Bolivian coral snake
120
ref
1.365
ref
80. Micrurus frontalis
Southern coral snake
141
ref
30
ref
0.75
ref
2,000 2.04
ref
735 0.2
ref
7,500
81. Micrurus alleni
Allen's coral snake
130
ref
0.23
ref
0.113
ref
82. Micrurus altirostris
Uruguayan Coral Snake
131
ref
0.26
ref
83. Micrurus clarki
Clark's coral snake
92
ref
0.42
ref
84. Micrurus corallinus
Painted coral snake
98
ref
0.25
ref
85. Micrurus distans
West Mexican coral snake
108
ref
2.40
ref
0.71
ref
86. Micrurus dumerilii
Dumeril's coral snake
95
ref
1.075
ref
0.7
ref
87. Micrurus fulvius
Eastern coral snake
130
ref
2.70
ref
5
ref
0.2
ref
1,250 1.3
ref
192 0.33
ref
758 0.2
ref
1,250
88. Micrurus hemprichii
Hemprich's coral snake
91
ref
1
ref
89. Micrurus ibiboboca
Caatinga coral snake
133
ref
3.35
ref
90. Micrurus lemniscatus
South American coral snake
145
ref
0.35
ref
91. Micrurus mipartitus
Redtail coral snake
120
ref
0.125
ref
92. Micrurus mosquitensis
Costa Rican coral snake
75
ref
0.2
ref
93. Micrurus multifasciatus
Many banded coral snake
1.875
ref
0.238
ref
94. Micrurus nigrocinctus
Central American coral snake
115
ref
8
ref
0.3
ref
1,333 1.7
ref
235 0.4
ref
1,000
95. Micrurus pyrrhocryptus
Argentinean coral snake
124
ref
1
ref
96. Micrurus spixii
Amazon coral snake
160
ref
0.3
ref
97. Micrurus surinamensis
Aquatic coral snake
135
ref
2.15
ref
98. Micrurus tener
Texas coral snake
121
ref
0.64
ref
4.4
ref
99. Micrurus tschudii
Desert coral snake
88
ref
0.44
ref
100. Naja siamensis
Indochinese spitting cobra
160
ref
4.70
ref
738
ref
0.075
ref
492,000 0.35
ref
105,429
101. Naja annulata
Ringed water cobra
270
ref
0.167
ref
0.143
ref
102. Naja annulifera
Banded cobra
245
ref
1.98
ref
1.75
ref
0.16
ref
103. Naja ashei
Giant spitting cobra
274
ref
3000
ref
104. Naja atra
Chinese cobra
200
ref
200
ref
0.264
ref
37,879 0.28
ref
35,714 0.074
ref
135,135 0.67
ref
14,925
105. Naja christyi
Congo water cobra
190
ref
0.12
ref
106. Naja haje
Egyptian cobra
300
ref
10
ref
300
ref
0.287
ref
52,265 4
ref
3,750 0.12
ref
125,000
107. Naja kaouthia
Monocled cobra
230
ref
6.78
ref
742
ref
0.115
ref
322,609 0.24
ref
154,583 0.148
ref
250,676
108. Naja katiensis
Mali cobra
107
ref
100
ref
1.42
ref
3,521
109. Naja melanoleuca
Forest cobra
320
ref
3.50
ref
1102
ref
0.093
ref
592,473 0.225
ref
244,889 0.324
ref
170,062
110. Naja mossambica
Mozambique spitting cobra
154
ref
656
ref
1.16
ref
28,276 0.083
ref
395,181
111. Naja naja
Spectacled cobra
220
ref
7.33
ref
610
ref
0.13
ref
234,615 0.29
ref
105,172 0.055
ref
554,545 1.2
ref
25,417
112. Naja nigricollis
Black necked spitting cobra
280
ref
5.80
ref
200
ref
0.03
ref
333,333 2
ref
5,000 0.352
ref
28,409 0.44
ref
22,727
113. Naja nivea
Cape cobra
185
ref
6
ref
150
ref
0.371
ref
20,216 0.4
ref
18,750 0.334
ref
22,455
114. Naja nubiae
Nubian spitting cobra
148
ref
0.53
ref
115. Naja oxiana
Caspian cobra
190
ref
5.62
ref
590
ref
0.272
ref
108,456 0.45
ref
65,556 2
ref
14,750 3.3
ref
8,939
116. Naja pallida
Red spitting cobra
154
ref
4.90
ref
260
ref
0.49
ref
26,531 2
ref
6,500
117. Naja philippinensis
Northern Philippine cobra
200
ref
250
ref
0.2
ref
62,500
118. Naja samarensis
Samar cobra
140
ref
0.21
ref
119. Naja sputatrix
Javan spitting cobra
185
ref
0.59
ref
1.7
ref
120. Naja sumatrana
Sumatran spitting cobra
160
ref
0.4
ref
121. Ophiophagus hannah
King cobra
585
ref
15
ref
500
ref
0.125
ref
200,000 1.091
ref
22,915 0.355
ref
70,423
122. Walterinnesia aegyptia
Western black desert cobra
130
ref
0.4
ref
0.14
ref
123. Homalopsis buccata
Linne's Water Snake
137
ref
14.3
ref
124. Myrrophis chinensis
Chinese Mud Snake
72
ref
2.05
ref
125. Subsessor bocourti
Bocourt's Water Snake
123
ref
7.3
ref
126. Azemiops feae
Fea's viper
100
ref
1.75
ref
0.52
ref
168
127. Agkistrodon bilineatus
Mexican cantil
138
ref
12
ref
688
ref
0.8
ref
43,000 19.2
ref
1,792 1.155
ref
29,784
128. Agkistrodon contortrix
Copperhead
135
ref
7.20
ref
75
ref
2.711
ref
1,383 0.6
ref
6,250 0.22
ref
17,045 0.024
ref
156,250
129. Agkistrodon piscivorus
Cottonmouth
180
ref
170
ref
2.25
ref
3,778 2.044
ref
4,159 0.18
ref
47,222
130. Agkistrodon taylori
Castellana
96
ref
2.3
ref
131. Agkistrodon laticinctus
1.118
ref
0.358
ref
132. Atropoides mexicanus
Mexican jumping pitviper
90
ref
5.656
ref
1.063
ref
133. Atropoides nummifer
Central American jumping pitviper
76
ref
60
ref
2.4
ref
1,250
134. Atropoides picadoi
Picado's jumping pitviper
120
ref
70
ref
1.419
ref
2,467 0.375
ref
9,333
135. Bothriechis lateralis
Side striped palm viper
100
ref
20
ref
5.144
ref
194 0.644
ref
1,553
136. Bothriechis nigroviridis
Black speckled palm pitviper
94
ref
4.438
ref
0.875
ref
137. Bothriechis schlegelii
Eyelash palm pitviper
90
ref
20
ref
1.6
ref
625 0.531
ref
1,883
138. Bothrops diporus
Chaco lancehead
110
ref
1.33
ref
6.41
ref
139. Bothrops erythromelas
Caatinga lancehead
85
ref
1.8
ref
3.03
ref
140. Bothrops insularis
Golden lancehead viper
120
ref
8.2
ref
3.3
ref
141. Bothrops jararaca
Jararaca
240
ref
70
ref
0.835
ref
4,192 4.32
ref
810 1.63
ref
2,147
142. Bothrops matogrossensis
Mato Grosso Lanzenotter
130
ref
2.45
ref
4.475
ref
143. Bothrops neuwiedi
Neuwied's lancehead
120
ref
0.605
ref
8.42
ref
1.51
ref
144. Bothrops pauloensis
Black faced Lancehead
85
ref
1.81
ref
145. Bothrops asper
Terciopelo
305
ref
25
ref
1530
ref
1.175
ref
65,106 0.469
ref
163,113
146. Bothrops atrox
Common lancehead
162
ref
200
ref
1.4
ref
7,143 22.14
ref
452 4
ref
2,500
147. Bothrops ayerbei
Ayerbe's Lancehead
130
ref
2.0778
ref
148. Bothrops caribbaeus
Saint Lucia lancehead
213
ref
2.5
ref
149. Bothrops jararacussu
Jararacussu
220
ref
1000
ref
0.14
ref
357,143 4.92
ref
10,163 2.73
ref
18,315
150. Bothrops lanceolatus
Martinique lancehead
298
ref
10
ref
151. Bothrops leucurus
Whitetail lancehead
195
ref
0.915
ref
4.28
ref
152. Bothrops moojeni
Brazilian lancehead
230
ref
0.39
ref
5.01
ref
153. Bothrops alternatus
Urutú
200
ref
100
ref
0.75
ref
6,667 12.85
ref
389 2.24
ref
2,232
154. Bothrops cotiara
Cotiara
100
ref
7.03
ref
3.08
ref
155. Bothrops fonsecai
Fonseca's lancehead
150
ref
56.8
ref
156. Bothrops itapetiningae
São Paulo lancehead
50
ref
17.19
ref
74.4
ref
157. Bothrops taeniatus
Speckled forest pitviper
175
ref
1.55
ref
3.585
ref
158. Calloselasma rhodostoma
Malayan pitviper
120
ref
60
ref
2.82
ref
1,064 16.1
ref
186 0.88
ref
3,409
159. Cerrophidion godmani
Godman's montane pitviper
82
ref
20
ref
4.75
ref
211 0.375
ref
2,667
160. Cerrophidion sasai
Costa Rica montane pitviper
71
ref
3.6666
ref
161. Crotalus viridis
Prairie rattlesnake
160
ref
8.40
ref
390
ref
1.01
ref
19,307 5.5
ref
3,545 0.38
ref
51,316 3
ref
6,500
162. Crotalus atrox
Western diamondback rattlesnake
230
ref
16
ref
1145
ref
0.92
ref
62,228 7.8
ref
7,340 0.72
ref
79,514 19.04
ref
3,007
163. Crotalus adamanteus
Eastern Diamondback Rattlesnake
251
ref
25
ref
848
ref
1.333
ref
31,808 7.7
ref
5,506 1.67
ref
25,389 28
ref
1,514
164. Crotalus basiliscus
Mexican west coast rattlesnake
205
ref
297
ref
11.1
ref
1,338 2.78
ref
5,342
165. Crotalus catalinensis
Santa Catalina Island Rattlesnake
70
ref
3.7
ref
10.9
ref
166. Crotalus cerastes
Sidewinder rattlesnake
82
ref
80
ref
2.6
ref
1,538 5.5
ref
727 2.08
ref
1,923
167. Crotalus cerberus
Arizona black rattlesnake
130
ref
2.5
ref
6
ref
168. Crotalus durissus
South American rattlesnake
200
ref
100
ref
0.047
ref
106,383 0.0478
ref
104,603 0.048
ref
104,167 1.4
ref
3,571
169. Crotalus enyo
Baja California rattlesnake
89
ref
2.8
ref
4.6
ref
170. Crotalus horridus
Timber rattlesnake
190
ref
229
ref
1.644
ref
6,965 2.25
ref
5,089 0.225
ref
50,889 0.006
ref
1,908,333
171. Crotalus lepidus
Mottled Rock rattlesnake
83
ref
129
ref
0.166
ref
38,855 8.8
ref
733
172. Crotalus mitchellii
San Lucan Speckled rattlesnake
136
ref
308
ref
0.18
ref
85,556 0.3
ref
51,333
173. Crotalus molossus
Northern black tailed rattlesnake
140
ref
540
ref
2.63
ref
10,266 2.35
ref
11,489 8.36
ref
3,230
174. Crotalus oreganus
Northern Pacific rattlesnake
162
ref
0.045
ref
3.56
ref
0.25
ref
1.2
ref
175. Crotalus pricei
Western twin spotted rattlesnake
66
ref
8
ref
0.95
ref
421 11.39
ref
35
176. Crotalus pusillus
Tancitaran dusky rattlesnake
70
ref
5.35
ref
15
ref
177. Crotalus ravus
Mexican pygmy rattlesnake
70
ref
2.4
ref
11.25
ref
178. Crotalus ruber
Red diamond rattlesnake
162
ref
707
ref
2.17
ref
16,290 9.92
ref
3,564 3.9
ref
9,064 9.2
ref
3,842
179. Crotalus scutulatus
Mohave rattlesnake
137
ref
8.80
ref
150
ref
0.03
ref
250,000 0.31
ref
24,194 0.11
ref
68,182 0.7
ref
10,714
180. Crotalus simus
Central American rattlesnake
180
ref
2.5
ref
181. Crotalus tigris
Tiger rattlesnake
90
ref
11
ref
0.056
ref
9,821 0.21
ref
2,619 0.05
ref
11,000
182. Crotalus totonacus
Totonacan rattlesnake
167
ref
2.5
ref
183. Crotalus tzabcan
Yucatán neotropical rattlesnake
170
ref
2.8
ref
184. Crotalus willardi
Arizona Ridgenose Rattlesnake
80
ref
1.61
ref
12
ref
185. Crotalus pyrrhus
Southwestern Speckled Rattlesnake
110
ref
2.7
ref
9.6
ref
186. Crotalus vegrandis
Uracoan Rattlesnake
129
ref
187. Deinagkistrodon acutus
Chinese sharp nosed pitviper
160
ref
214
ref
0.38
ref
28,158 9.2
ref
1,163 2.8
ref
3,821
188. Gloydius intermedius
Intermediate mamushi
80
ref
0.38
ref
189. Gloydius blomhoffii
Mamushi
91
ref
7
ref
1.32
ref
265 18.29
ref
19 1.32
ref
265
190. Gloydius brevicaudus
Short tailed mamushi
75
ref
2.044
ref
0.875
ref
191. Gloydius halys
Siberian pitviper
90
ref
0.304
ref
4
ref
192. Gloydius shedaoensis
Shedao island pitviper
80
ref
0.813
ref
193. Gloydius ussuriensis
Ussuri mamushi
70
ref
1.139
ref
0.625
ref
194. Hypnale hypnale
Hump nosed pitviper
60
ref
20
ref
0.9
ref
1,111 6
ref
167 13.7
ref
73
195. Lachesis melanocephala
Black headed bushmaster
240
ref
6.059
ref
196. Lachesis muta
Atlantic bushmaster
360
ref
35
ref
411
ref
0.9
ref
22,833 6
ref
3,425 6.2
ref
3,315
197. Ovophis okinavensis
Hime habu
120
ref
3.83
ref
15
ref
198. Porthidium nasutum
Rainforest hog nosed pitviper
60
ref
25
ref
4.6
ref
272 0.438
ref
2,854
199. Porthidium ophryomegas
Slender hognosed pitviper
80
ref
20
ref
6.813
ref
147 0.719
ref
1,391
200. Protobothrops elegans
Sakishima habu
120
ref
3.8
ref
201. Protobothrops flavoviridis
Okinawa habu
300
ref
353.8
ref
2.5
ref
7,076 4.3
ref
4,114 0.572
ref
30,927 7.5
ref
2,359
202. Protobothrops mangshanensis
Mangshan pitviper
213
ref
20
ref
960
ref
203. Protobothrops mucrosquamatus
Taiwan habu
150
ref
1.5
ref
8.6
ref
2.815
ref
204. Protobothrops tokarensis
Tokara Island Pit Viper
150
ref
7.5
ref
205. Sistrurus catenatus
Massassauga
100
ref
45
ref
6.8
ref
331
206. Sistrurus miliarius
Pygmy rattlesnake
80
ref
35
ref
2.8
ref
625 24.25
ref
72 5
ref
350
207. Trimeresurus stejnegeri
Chinese green tree viper
112
ref
0.8
ref
208. Trimeresurus albolabris
White lipped pitviper
100
ref
15
ref
0.37
ref
2,027 12.75
ref
59 3.3
ref
227
209. Trimeresurus erythrurus
Red tailed bamboo pitviper
140
ref
2.1
ref
210. Trimeresurus gramineus
Bamboo pitviper
120
ref
7
ref
1.645
ref
4
ref
211. Trimeresurus labialis
Nicobar bamboo pitviper
44
ref
1.497
ref
212. Trimeresurus macrops
Large eyed pitviper
72
ref
8.75
ref
213. Trimeresurus malabaricus
Malabar pitviper
105
ref
18.5
ref
214. Trimeresurus popeiorum
Pope's bamboo pitviper
98
ref
7
ref
1.45
ref
215. Trimeresurus purpureomaculatus
Mangrove pitviper
107
ref
0.5
ref
216. Trimeresurus sumatranus
Sumatran pitviper
160
ref
10
ref
0.38
ref
217. Tropidolaemus wagleri
Wagler's pitviper
130
ref
90
ref
0.625
ref
7,200 4.625
ref
973 3.575
ref
1,259
218. Atheris squamigera
African Bush Viper
80
ref
0.611
ref
219. Bitis arietans
Puff adder
191
ref
30
ref
750
ref
0.389
ref
96,401 0.6
ref
62,500 0.5
ref
75,000 2
ref
18,750
220. Bitis atropos
Cape mountain adder
60
ref
0.111
ref
221. Bitis caudalis
Horned puff adder
52
ref
85
ref
1.111
ref
3,825 0.18
ref
23,611
222. Bitis cornuta
Western many horned adder
60
ref
0.444
ref
223. Bitis gabonica
Central African gaboon viper
200
ref
55
ref
2400
ref
0.55
ref
218,182 5
ref
24,000 0.72
ref
166,667 5.2
ref
23,077
224. Bitis nasicornis
Rhinoceros viper
150
ref
15
ref
353
ref
1.056
ref
16,714 8.6
ref
2,052
225. Bitis parviocula
Ethiopian mountain adder
75
ref
1.56
ref
226. Bitis rhinoceros
West African gaboon viper
180
ref
50
ref
848
ref
227. Causus rhombeatus
Common Night Adder
100
ref
300
ref
10.278
ref
1,459
228. Cerastes cerastes
Horned viper
90
ref
5
ref
0.25
ref
0.475
ref
0.296
ref
229. Cerastes gasperettii
Arabian horned viper
85
ref
0.481
ref
0.978
ref
230. Cerastes vipera
Sahara sand viper
50
ref
43
ref
0.5
ref
4,300 0.25
ref
8,600
231. Daboia palaestinae
Palestine viper
180
ref
0.2
ref
2.333
ref
1.9
ref
232. Daboia russelii
Russell's viper
180
ref
13
ref
240
ref
0.035
ref
342,857 8.25
ref
1,455 0.4
ref
30,000 0.01
ref
1,200,000
233. Daboia siamensis
Eastern Russell's Viper
150
ref
268
ref
0.178
ref
75,281 1.37
ref
9,781 0.489
ref
27,403 2.1
ref
6,381
234. Daboia mauritanica
Moorish viper
180
ref
0.2985
ref
235. Echis ocellatus
West African carpet viper
65
ref
24.8
ref
0.804
ref
1,542
236. Echis carinatus
Saw scaled viper
90
ref
72
ref
0.12
ref
30,000 5.5
ref
655 0.196
ref
18,367
237. Echis coloratus
Painted saw scaled viper
90
ref
0.25
ref
5.167
ref
0.376
ref
238. Echis pyramidum
Egyptian saw scaled viper
85
ref
0.84
ref
239. Macrovipera lebetina
Levantine viper
210
ref
150
ref
0.568
ref
13,204 2.72
ref
2,757 6.6
ref
1,136 0.01
ref
750,000
240. Macrovipera schweizeri
Milos viper
100
ref
1.175
ref
241. Montivipera bornmuelleri
Lebanon viper
80
ref
0.605
ref
6.25
ref
1.92
ref
242. Montivipera latifii
Latifi's viper
78
ref
0.224
ref
4.61
ref
2.07
ref
243. Montivipera raddei
Armenian mountain viper
110
ref
0.1935
ref
244. Montivipera xanthina
Ottoman viper
150
ref
18
ref
0.228
ref
3,947
245. Pseudocerastes fieldi
Field's horned viper
116
ref
100
ref
0.125
ref
40,000 0.54
ref
9,259
246. Pseudocerastes persicus
Persian horned viper
90
ref
0.604
ref
247. Vipera ammodytes
European nose horned viper
110
ref
13
ref
0.01
ref
2
ref
1.4
ref
248. Vipera aspis
Aspic viper
90
ref
10
ref
0.78
ref
641 1
ref
500
249. Vipera berus
Common European adder
90
ref
4
ref
18
ref
0.41
ref
2,195 1
ref
900 0.86
ref
1,047
250. Vipera latastei
Lataste's viper
75
ref
26
ref
0.755
ref
1,722
251. Vipera lotievi
Caucasian meadow viper
62
ref
0.6075
ref
252. Vipera seoanei
Baskian viper
75
ref
0.485
ref
253. Vipera ursinii
Ursini's viper
80
ref
4
ref
254. Amphiesma stolatum
Buff Striped Keelback
90
ref
0.1
ref
255. Natrix tessellata
Dice snake
150
ref
25
ref
256. Rhabdophis subminiatus
Red necked keelback
130
ref
0.125
ref
257. Rhabdophis tigrinus
Tiger keelback
130
ref
2.30
ref
20.5
ref
0.265
ref
3,868 9.2
ref
111 7.35
ref
139
258. Thamnophis elegans
Western Terrestrial Garter Snake
90
ref
0.46
ref
13.85
ref
2
259. Thamnophis sirtalis
Common Garter Snake
130
ref
33
ref
260. Diadophis punctatus
Ringneck Snake
75
ref
2.88
ref
261. Hydrodynastes gigas
False Water Cobra
215
ref
15.2
ref
2
ref
380
262. Hypsiglena torquata
Night snake
65
ref
1.05
ref
263. Hypsiglena jani
San Luis Potosi night snake
43
ref
1.05
ref
26
ref
2
264. Leptodeira annulata
Banded Cat eyed Snake
65
ref
50
ref
0.975
ref
265. Philodryas olfersii
Lichtenstein's Green Racer
150
ref
2.79
ref

Legend and definitions

Jump back to top of the table

Scientific Name The scientific name is the only way to clearly identify a snake species. Common names can be redundant, but scientific names are unique by definition.
Common name English name of the snake
Class Smiley = harmless, 1 Skull = potentially dangerous, 2 Skulls = dangerous, 3 Skulls = very dangerous, empty space = we don't know, yet
Lenght Maximum length of the snake.
Weight Maximum weight of the snake. For some snakes we have maximum lenght for adults but weight only for hatchlings, don't wonder if length and weight do not fit together. Those are separate values.
Fang Maximum fang length.
Venom The venom yield that can get extracted from a snake, usually by milking it. The milking process can be quite cumbersome, especially with rear fanged species like the Boomslang(Dispholidus typus). This snakes has a low nominal venom yield, but a full bite can be lethal nonetheless. Most of the venom yields in our list are from researches in the 1970s or even earlier. New milking methods would in many cases probably result in much higher venom yields.
LD50 SC (subcutaneous injection) LD50 is the abbreviation for lethal dose 50, sometimes referred as median lethal dose as well. The unit is milligramm per kilo, low LD50 values characterize strong venoms. All LD50 values in this table are from laboratory testing with mice. A dose that kills 50% of the injected mice is the LD50 value. Testing with other animals (e.g. rats, dogs, cats, guinea pigs, frogs, pigeons, monkeys etc) is possible, but less common than testing with mice. That's why they are not included in this list, our LD50s are from murine testing only. The way of injection plays a vital role in envenomination as well. Subcutaneous injection is the injection directly under the skin. Subcutaneous injection the most common envenomination after a snake bite for humans. That's why we presorted the table by this criteria
LD50 IV (intravenous injection) This is the LD50 for intravenous injection (IV), this happens when the snakebite hits a blood vessel. In most cases - this really depends on the venom type - intravenous injections will show a much stronger effect than subcutaneous injections. Snakebites that directly hit a blood vessel are fortunately relatively rare.
LD50 IP (intraperitoneal injection) This is the LD50 for intraperitoneal injection (IP), this happens when a snake bite its victim into the abdomen.
LD50 IM (intramuscular injection) This is the LD50 for intramuscular injection(IM). Intramuscular injection requires - at least from the perspective of a human bite victim - long venom fangs. That's why this way of envenomination is comparatively rare and less frequently tested.
kills 50% of If you have an LD50 value and a venom yield for a specific snake, you can calculate the number of mice (each at a weight of 20 gr) a snake could theoretically kill with its venom supply. The snake could kill 50% of the displayed number of mice.

Please keep in mind that this table only describes the toxicity of a snake considered they get a full bite with venom injection. IF a snake actually poses a threat to humans is a completely different story and depends on other factors like behaviour and distribution just to name a few. The Inland taipan (Oxyuranus microlepidotus) may be on the top of our list, as it is the snake with the most toxic venom, but it rarely kills people because it lives seclusively in the australian outback. The Saw-scaled viper (Echis carinatus) does not show up in the Top10, but it is considered by many as the most dangerous snake on the planet. It lives close to humans and due to its small size people overlook it easily. And unlike many other snakes, it seldomly gives dry defensive bites. When a Saw-scaled viper bites, and is has a reputation for being aggressive and striking easily, it usually delivers a large quantity of venom. Many people die each year by a bite of this species.