The Biggest Snake to Have Ever Lived 
If you think that an anaconda big enough to swallow a capybara
or tapir whole is big, you should see the size of the giant snake
scientists discovered in a coal mine in Columbia, South America
in 2008. Fossils of an enormous snake were discovered in an open
coal mine in the Amazon rainforest. Paleontologists estimated the
length of the snake to be 43 feet long and estimated to weigh 2,500
pounds! Based on their findings, the scientists who identified this
new species of snake said it was large enough to prey on crocodiles.
Since snakes are cold-blooded, the average temperature of the Amazon
had to have been 6 to 8 degrees warmer to support a snake that enormous.