Pythons and anacondas are often confused as being the same, and it’s easy to see why. Both are massive, non-venomous snakes that kill their prey by biting and squeezing it to death. But despite their ...

Snakes come in all sizes today, from tiny thread snakes no longer than a pencil to green anacondas that rival small cars in length. You already know the anaconda as one of nature’s heavyweights.

Ancient anaconda fossils show that the snakes became giants soon after emerging in Miocene South America. Their size has stayed stable for over 12 million years, even though other huge reptiles went ...