The saw-scaled viper is a species of a venomous snake which belongs to the genus Echis. With a pear-shaped head, the adult can reach a maximum body length of 1 m (3ft4in). The sub-species Echis carinatus sal of the saw-scaled viper is dark and light brown, with creamy white inverted "V" patterns along both sides of its body length and white spots on its dorsal scales which form serrated keels. This snake, which inhabits the warm and dry regions of northern Africa and Asia, feeds on lizards and rats. Extremely fast, the saw-scaled viper has hemotoxic venom which causes intracranial bleeding and high fever. According to statistics, 3 out of 10 bitten people die in a period of 3 to 4 days.