Hello how may I help you? What is the biggest snake ever was Ok do you mean the biggest individual snake or the biggest type of snake? How about you pick for me Ok the Biggest individual snake was an anaconda caught in the Amazon in 1963. The snake was 35'7" and weighed over 400lbs The biggest type of snakes is the anaconda. Wow that's some great information thank you so much No problem. Is there anything else i CAN HELP WITH? No that's all for today thank you Ok, well have a great day U 2 Bye