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VenomousReptiles.org Survey
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Survey Question
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Current Survey Question
Should hobbyists ever free handle venomous reptiles with their hands?
Recent Surveys
Most venomous/toxic Naja species in the world? I have read that the Philippine cobra is the most venomous (mice, 0.2 mg/kg SC with the lowest reported value being 0.14 mg/kg SC) (Brown, 1973). I have recently, come across something in the Indian Journal of Experimental Biology (Vol. 30, (issue 12), pages: 1158-1162, 1992) which stated that the LD50 for Naja oxiana was the most toxic/venomous (mice, 0.18 mg/kg SC and lowest reported value was 0.10 mg/kg). Along with that, the mortality rate for untreated Naja oxiana bites are the highest among all Naja species (70-80%). N.oxiana also produced the lowest known lethal dose (LCLo) of 0.005 mg/kg, the lowest among all cobra species ever recorded, derived from an individual case of poisoning by intracerebroventricular injection.
Following N. oxiana and N. philippinensis are N. melanoleuca at 0.225 mg/kg SC and then N. samarensis at 0.23 mg/kg. The water cobras (N. annulata and N. christyi also have very toxic venoms, but no SC values are listed. Only intraperitoneal (IP) values of 0.143 mg/kg for N. annulata and 0.12 mg/kg for N. christyi. IP values tend to be generally lower (more toxic than subcutaneous values, so it would be unfair to compare their IP results to the subcutaneous (SC) results of other Naja species. Then I have heard that (without solid evidence) that Naja nivea is the most venomous, although their murine SC LD50 range anywhere from 0.4 mg/kg (Toxicon, Vol. 5, issue 1, page 47, 1967) to 0.72 mg/kg (Australian venoms and toxins Databse).
So which is the most venomous? To me it seems obvious that it is the Caspian or Oxus cobra (Naja oxiana), followed by the Philippine cobra (Naja philippinensis). What do you think or know?
I've noticed that the Australian venom and toxin Database seems to have higher LD50 values for all snakes across the board. For example, for the black mamba IP value of 0.01 mg/kg is listed (http://www.sciencedirect.com/science/article/pii/004101018890219X) and Ernst and Zug et al 1996, list a SC value of 0.05 mg/kg for the black mamba. While the Australian venom and toxin Database listed much less toxic LD50's. So there seems to be a lot of variation.
2014-01-23
What's Your Favorite Venomous Snake?
2013-11-13
Deadliest Bite?
2013-09-16
IF the science of self-immunization for a snake envenomation was proven/perfected what is the least benefit(percentage) you would accept before practicing it on yourself?
2013-06-06
how did you learn to keep venomous reptiles?
2013-03-02
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POLL on HB 1788 and Herp Stamp Usage in TEXAS
http://www.capitol.state.tx.us/tlodocs/82R/billtext/pdf/HB01788I.pdf#navpanes=0.
If HB 1788 were to pass in Texas, I would:
Posted: May 14, 2011
(35 votes, 1 comments)
by Time
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Survey Results
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1) Not purchase a herp stamp.
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23% (8)
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2) Purchase a herp stamp and I am a non resident.
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54% (19)
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3) Purchase a herp stamp and I am a resident
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23% (8)
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Survey Comments
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HB 1788 Texas
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It would be terrible if this bill was to pass but my love
of herping is bigger than this stamp. We must obey the
laws even if we don't agree. We can get them back by
voting them out of office and by taking action by
getting involved in fighting back any legislature we
disagree with. Its our God given red, white and blue
RIGHT!
Posted by
Lovelifesemperfi
on July 21, 2011
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