Add Yahoo as a preferred source to see more of our stories on Google. A study of anaconda fossils shows that these snakes reached their maximum size 12.4 million years ago and then stopped growing. As ...

Deep inside Ecuador’s Amazon basin, a film crew and a team of biologists set out to capture a television moment and instead stumbled onto a scientific milestone: a colossal anaconda that may be the ...

From a giant venomous centipede to a tiny but horrendous worm - here are some of the Amazon's most deadly animals ...