Cerastes, the san Antonio zoo retic is no longer alive. I believe she never got that big anyway. Perhaps some 25 feet... (still huge).
The heaviest snake of all time was a rock python, not an Anaconda. The 2 biggest contenders were around 27'10'' (Anaconda) 31'2''(rock python). Though there are no weight data on either them, it's easy to guess wich is heavier.
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