South America

  1  The greenest of all boas If you ever needed to infiltrate the Amazon rainforest by stealth, which colours

  1  The world’s longest viper Worldwide, the mighty viper family (Viperidae) has over 200 members. The 50+ rattlesnake species

  1  South America’s ruling snake The boa constrictor is an icon of terror, joining such infamous snakes as the