Defining “Big” in the Snake World Depending on your definition of “big,” there are two species in the running for the biggest snake in the world: the reticulated python and the anaconda.

The world's heaviest snakes, including the green anaconda and Burmese python, showcase remarkable size and strength. The green anaconda is the heaviest living snake, while the reticulated python ...

Will the green anaconda challenge the reticulated python for the crown? Probably not. The green anaconda holds its own record as the heaviest snake on Earth, weighing more than 550 pounds.

The reticulated python is the longest snake in the world, with the longest ever recorded measuring about 32.8 feet long.