Vipers are among the deadliest snakes on the planet – and among the most widespread. And yet, in snake evolution, they are the 'new kids on the block'. What makes these extraordinary predators so successful? With new science and signature 3D graphics we'll unveil the evolutionary secrets and amazing engineering that make vipers one of nature's cold-blooded success stories. Answers come from an in-depth exploration of the vipers' unique bioengineering, their highly aggressive nature, and astounding breeding capability. Peeling back the skin, we'll explore these creatures' bizarre anatomy. Their oversized heads are perfectly designed to devour large prey. Enormous mouth gapes can swivel open almost 180 degrees. And their huge retractable fangs can swing forward to strike.