Common sense would tell us that since the main function of venom is to help in acquiring food, and since venomous snakes subsequently ingest their envenomated victims, then most venomous snakes should have adequate immunity from their own venom. I'm not positive of this, but I have heard of rattlesnakes accidentally biting themselves and dying as a result, but I believe the cause of death in these cases usually is that the fangs penetrate a vital organ. Someone please correct me if this is wrong.
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MichaelB

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