Quick Take Reaching a size 5 times larger than males is a biological benchmark for breeding females. Holding breath for 10 minutes underwater dictates the specific aquatic reach of the green anaconda.

A mechanical constraint prevented the Titanoboa from lifting more than 1/5 of its body to strike. Counter-intuitively, the world’s largest apex predator was unearthed deep within the Cerrejón coal ...

There are hundreds of deadly snakes in the world, but only a few that actually want to eat you—and have the size to do it. A 2011 research article published in the Proceedings of the National Academy ...