Most intriguing snake?

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Which snake species do you find most intriguing? It does not have to be one you own, or ever plan on owning ... Just the one you find to be most interesting.

I have to say personally, the snake I find to be most intriguing is the boomslang. I don't have any desire to ever own one ( even if they were more readily avaible) I just find them to be fascinating. Plus the males are very pretty. Not the most venemous, largest, or active but one of my favorites non the less.