Ultimate Viper (DVD)

Vipers have been evolving their way toward the top of the reptile heap for millions of years. Armed with an amazing arsenal of deadly tools, vipers have proven to be remarkably successful predators. Sharpened by millennia of natural selection, vipers have used these traits to penetrate almost every continent on the globe. But in an ever-changing world where skills new and old are constantly put to test, how will these reptiles find new evolutionary paths in which to continue to advance?

• documentary
• nonfiction