The biggest snake that ever lived (that we know about) was a massive anaconda-like beast that slithered through steamy tropical rainforests about 60 million years ago feasting on primitive crocodiles, National Geographic News reported today.“Fossils discovered in northeastern Colombia’s Cerrejon coal mine indicate the reptile was at least 42 feet (13 meters) long and weighed 2,500 pounds (1,135 kilograms),” contributor John Roach reported today.For 135 million years, dinosaurs were the undisputed rulers of the Earth, and could still have been today if not for a cataclysmic comet some 65 million years ago.However, our planet has been around for a lot longer than the dinosaurs’ reign and, as it turns out, nature is quite adept at producing nightmare-inducing monsters.

There a three ingredients to a fatal dog attack; size and power of the dog, aggression and not to be overlooked a reason – usually lack of training and maltreatment…Humans would stand no chance against one of these giant snakes, said Hans-Dieter Sues, paleontologist and associate director for research and collections at the National Museum of Natural History of the Smithsonian Institution in Washington, D. “Given the sheer size, the sheer cross section of that snake, it would be probably like one of those devices they use to crush old cars in a junkyard.” The giant skull of a one-ton prehistoric rat — shown here next to a modern-day rat — was revealed on January 16, 2008.“Measuring 53 centimeters (21 inches) long, the skull was found in Uruguay by an amateur fossil hunter among fallen cliff rocks in the San José region.This large breed of Italian mastiff is a descendent of the dogs Roman soldiers used in wars.As you can see, the giant orb weaver likes to eat birds. Found in Australia, they grow to around the size of a human hand, though in more tropical climates they can be bigger.