Scientists recently discovered a new species of green anaconda in the Amazon rainforest. A new Nat Geo series shows the ...

Discover the monster snake that makes all modern snakes seem small by comparison. Learn about Titanoboa, the biggest snake to roam the Earth!

Anaconda footage from the Amazon forest in a Nat Geo series shows scientists sampling a giant Green anaconda, tied to a proposed new species.

Quick Take Reaching a size 5 times larger than males is a biological benchmark for breeding females. Holding breath for 10 ...

The giant anaconda, one of the largest snakes in the world, has a fascinating history that dates back over 12 million years. Recent fossil evidence from Venezuela reveals that these magnificent ...

A recent National Geographic expedition has confirmed the existence of an exceptionally large Green Anaconda, Ana Julia, ...

A University of Cambridge-led team has analyzed giant anaconda fossils from South America to deduce that these tropical snakes reached their maximum size 12.4 million years ago and have remained ...

During the Middle to Upper Miocene period (12.4 to 5.3 million years ago), giant animals walked—and slithered—the Earth thanks to warmer temperatures, larger wetlands, and greater amounts of food.

These giant snakes have been known to drag off children and pets. BONITO, Brazil, Sept. 22, 2012— -- As I held my breath underwater, the 200-pound anaconda slid leisurely beneath me -- inches ...

The birth of two anacondas at the New England Aquarium took everyone by surprise because the exhibit has no male snakes. The birth of some animals at an aquarium wouldn't normally be news. But the ...