Okay, this is purely hypothetical, but not at all impossible.
There are many types of chemicals classified as hallucinogens. These are chemicals that typically resemble seratonin (LSD, psilocybin, psilocyn, mescaline, DMT, etc.) and are alkaloids. All are organic, and most derived or extracted directly from living creatures or plants. Their effects on the human (and presumably animal) brain manifest themselves in many ways, with distortion/enhancement of vision, visual/aural hallucinations, tracers, mental confusion, etc. Let's take DMT (Di-methyltryptamine) for example, and because if their were a venomous snake that injected a hallucinogen into it's victims, this would probably be the hallucinogen. This compound is orally inactive because it is broken down by the MAO enzyme in your stomach. The only way it can become orally active is through taking an MAO inhibitor (MAOI). That's beside the point. However, when smoked, or injected (intraveiniously, but i'm sure IM or subcutainuously would also produce effects) it's effects are immediate and incredibly powerful. Most people who have experienced this substance claim that reality as we know it is instantly transformed into one big hallucination. The effects are rather short lived, usually the peak of the experience is over within 5-10 min, gradually subsiding to normality within 30 min. This would obviously give a snake enough time to escape after biting and disorienting a predator. It would take a large dose of DMT to kill a person, or possibly an animal therefore our hypothetical snake at least uses constriction to some degree (some australian elapids are known to both envenomate and constrict their prey). Now here's why this scenario is not far fetched at all:
DMT is present in many different animals and plants, including humans. DMT is found in human spinal fluids in minute amounts. Some people feel that schizophrenia and other mental diseases could be caused to some degree by an imbalance of the bodie's natural hallucinogens...Now some plants and animals use this substance as a weapon. The Sonoran desert toad (Bufo alvarius) contains up to 15% 5-MeO DMT (a related compound even stronger than DMT) in it's venom that it secretes from it's skin. If you've ever heard of people licking toads to get high, this is where that came from. This is slightly wrong though, because licking it could kill you. The method of ingesting the toad venom is to milk the toad (by massaging it's warts), dry the venom, and smoke it. Regardless, the point is that animals already use hallucinogens as a defense. Would it be so far-fetched to think that hallucinogens could find their way into snake venom somewhere along the evolutionary ladder? Anyway, this is just a hypothetical question i posed because i'm bored,
Information DMT and other drugs can be found at
http://www.erowid.org if you are interested. I in no way endorse drug use, but I do endorse open-mindedness. This is simply a question i posed melding two of my interests into one weird question
Any thoughts or insights would be welcomed.
AP


